From the Sector

On April 17, 2025, the 81st Annual General Meeting of Lenzing AG adopted the resolution to discharge the members of the Managing and Supervisory Boards acting in the 2024 financial year and set the remuneration of the Supervisory Board members for the 2025 financial year.

In addition, a revised remuneration policy was approved. In order to align the remuneration policy for the Managing Board even more closely with the interests of shareholders, the link to share price performance in performance-based remuneration, in particular, was further strengthened. The new remuneration policy of Lenzing AG is also linked to non-financial sustainability criteria (ESG) in addition to financial performance criteria.

KPMG Austria GmbH Wirtschaftsprüfungs- u. Steuerberatungsgesellschaft was appointed as the auditor for both the separate and the consolidated financial statements and also as the auditor of the sustainability reporting for the 2025 financial year.

Elections to the Supervisory Board
The Annual General Meeting also elected Patrick Lackenbucher and Leonardo Grimaldi as new members of the Supervisory Board of Lenzing AG until the end of the Annual General Meeting that adopts the resolution that discharges the Supervisory Board members acting in the 2029 financial year. The mandate of Stefan Fida was also extended until the end of the Annual General Meeting that adopts the resolution that discharges the Supervisory Board members acting in the 2029 financial year.

The elections to the Supervisory Board were due to the expiry of the terms of office of Stefan Fida and of Cord Prinzhorn, who is thereby stepping down from the Supervisory Board in order to concentrate in the future on both existing as well as new tasks within the B&C Group. Marcelo Feriozzi Bacci had already stepped down from the Supervisory Board at his own request on December 6, 2024.

As a consequence, the Supervisory Board of Lenzing AG continues to consist of ten members elected by the Annual General Meeting: Carlos Aníbal de Almeida Junior, Cornelius Baur, Helmut Bernkopf, Stefan Fida, Markus Fürst, Franz Gasselsberger, Leonardo Grimaldi, Patrick Lackenbucher, Gerhard Schwartz and Astrid Skala-Kuhmann. Stefan Ertl, Stephan Gruber, Bonita Haag, Helmut Kirchmair and Johann Schernberger were delegated to the Supervisory Board by the Works Council.

At the constituent meeting of the Supervisory Board following the Annual General Meeting, Patrick Lackenbucher was elected Chairman, Carlos de Almeida was elected First Deputy Chairman and Stefan Fida was elected Second Deputy Chairman of the Supervisory Board.

INDA, the Association of the Nonwoven Fabrics Industry, proudly announces Carl Cucuzza and Lynda Kelly as the recipients of the 2025 INDA Lifetime Service Awards. Carl and Lynda are being recognized for their key contributions to the advancement of the nonwovens industry and INDA.

“I am thrilled to recognize Carl and Lynda for their exceptional dedication and impactful contributions,” said Matt O’Sickey, PhD, Director of Education & Technical Affairs at INDA. “Their unwavering commitment and tireless advocacy play vital roles in shaping the future of the nonwovens industry. I am looking forward to seeing and giving them their Awards at Hygienix and IDEA®25.”

• Carl Cucuzza will receive his award during the Hygienix™ Conference on November 18th at 4:30 pm.
• Lynda Kelly will receive her award during IDEA®25 on April 29th at 4:45 pm.

Here are the Award recipients:

Carl Cucuzza: INDA Lifetime Service Award
“I am deeply honored and thankful to receive this Lifetime Service Award from INDA. It has been a blessing to collaborate with a close-knit community of dedicated professionals who continually innovate in ways that improve lives while protecting the environment. I’m grateful for the recognition and continue to be excited to see steady growth through the entrepreneurial spirit that is a hallmark of this industry.”

Carl Cucuzza, prior to retirement, was President and Managing Partner of Teknoweb North America, a key supplier of converting equipment for wet and dry wipes, facemasks, and similar disposable products. He also partnered with his son in establishing the Hot Melt Supply Company, which provides service and support for adhesive applications in the disposables, product assembly, and packaging industries.

Prior to that, Carl was General Manager of Newco Enterprises, Inc. and Global Sales and Marketing Manager for the Nonwovens Systems Group of Nordson Corporation. In that role, Carl directly managed the North American and European sales efforts to disposables producers and personally coordinated hot melt systems sales and support activities for a major producer’s global baby diaper production expansion through the 1990s.

Carl is a past board member of INDA, Organizing Committee member, Moderator and Presenter for over 35 years at Vision, WOW, Hygienix, and various other domestic and international conferences. He has been recognized by the state of Georgia with the Award for Product Development and Management Excellence and has received seven patents for machinery and processes for the production of disposable products. He has also published numerous technical papers and articles, consulted on disposables projects, and acted as an expert witness.

Born and raised in Bradford, PA, and living in Monroe, GA, he and his wife Toni have been married for 47 years and have four children and four grandchildren,

Lynda Kelly: INDA Lifetime Service Award
“I am truly humbled and honored to receive the INDA Lifetime Service Award. Growing up in this amazing industry has been a remarkable journey, working alongside so many incredible colleagues across the globe to develop and sell unique nonwoven product solutions and technologies. As an industry, we have achieved so much over the decades, and I am proud to have been part of its evolution. It has truly been an incredible experience!

Lynda Kelly served as Senior Vice President, Americas & Business Development for Suominen Corporation until her retirement in 2023, due to health challenges. She dedicated nearly a decade to Suominen, where she led the Care team then transitioned to lead Americas sales team alongside global product and business development professionals. Under her leadership, the company successfully advanced its sales, market presence, and innovative products to achieve optimal profitability.

Lynda began her career at Kendall, which later merged into International Paper/Veratec and eventually became BBA Nonwovens. Throughout her tenure, she managed sales and marketing across various sectors, advancing into leadership roles. Early in her career, she embraced an expatriate assignment in Toronto, Canada, which provided her with early exposure to the rapidly growing spunmelt market.

In addition to her time at Suominen, Lynda brought deep expertise to the nonwovens industry through 11 years at First Quality Nonwovens, where she helped expand their spunmelt nonwovens offerings in the medical market. She also gained valuable insights into consulting during her two years with John Starr.

A devoted contributor to the nonwovens industry, Lynda remains a long-term supporter of INDA initiatives. She played a significant role as a key member of INDA’s AAMI medical disposable standards committee, helping to shape critical industry-wide guidelines. From 2019 to 2022, she served on the INDA Board of Directors, navigating the challenges and opportunities presented by the pandemic and advocating for collaboration across the sector. While at Suominen, she championed wellness-focused events like the “Run or Walk with Suominen,” blending industry engagement with health, fun, and community.

Lynda’s passion for the nonwovens industry extended beyond her professional contributions. Known for her enthusiasm, she often turned personal encounters into learning opportunities. For example, she would often examine new nonwoven products in a hospital or doctor’s office to spark inspiration. This curiosity drove her to learn more, initiate meaningful conversations, and implement innovative changes within her own teams.

Above all, Lynda cherishes the relationships she developed throughout her career. From colleagues to friends, she believes the most rewarding part of her journey was the people who enriched it. For Lynda, the true heart of the nonwovens industry has always been the connections and partnerships that make it thrive.

On Tuesday 15 April, EURATEX (the European Apparel and Textile Confederation) and FTTH (Fédération Tunisienne du Textile et de l’Habillement) formalised a new chapter in Euro-Mediterranean collaboration by signing a Memorandum of Understanding (MoU) in Monastir, Tunisia. The agreement reinforces the commitment of both parties to closer industrial cooperation, with a strong focus on sustainability, investment, and trade integration under the revised Pan-Euro-Mediterranean Convention.

The signature ceremony took place at the Monastir Technopole in the presence of senior representatives, including the Governor of Monastir, the Tunisian Minister of Industry, the EU Ambassador to Tunisia, and business leaders from both regions. It marked a significant step towards establishing a structured dialogue and actionable cooperation between two key textile industries, in the context of global supply chain shifts and increasing demand for sustainable production.

“Europe and Tunisia share a long-standing partnership. While our systems may differ, our industries are deeply complementary. In a time of regulatory transformation and increasing environmental ambitions, working together is essential,” said EURATEX President Mario Jorge Machado. “This MoU offers a practical framework to improve competitiveness, drive innovation, and reinforce the resilience of our shared textile ecosystem.”

The agreement also reflects a broader vision to revitalise and reinforce industrial partnerships across the Mediterranean. In an evolving geopolitical and economic context, Tunisia stands out as a trusted and strategically located partner. Deepening regional value chains, reducing dependency on distant sourcing, and fostering nearshoring solutions are not only economic imperatives, but also critical components of building a more sustainable and resilient European textile industry. The MoU with FTTH embodies this ambition by promoting a Mediterranean model of cooperation rooted in proximity, trust, and shared economic interests.

The Tunisian textile and apparel sector is a cornerstone of the national economy, accounting for over 160,000 jobs and more than 1,600 active companies. In 2024, Tunisia exported €2.5 billion in textiles and clothing to the EU, confirming its strategic position as a nearshoring partner. The MoU supports Tunisia’s ambition to become a modern, circular and competitive textile hub, while encouraging investment and industrial synergies with European partners.

As the European textile sector undergoes profound transformation, reinforced cooperation with neighbouring countries like Tunisia is essential to shape a more sustainable and strategic regional supply chain.

BODICE, a contemporary Indian fashion label unveiled its much-anticipated collection as a runway show at the BODICE flagship store in New Delhi. Rooted in the idea of self-discovery, the collection embraces evolving identity through artisan-collaborations and intuitive design. The garments of this collection are made with fabrics using Bemberg™ yarn, which are produced in Surat and Varanasi, prominent textile centers in India.

The roots of this partnership between Bemberg™ and BODICE traces back to an inspiring journey that began in last November. Asahi Kasei invited BODICE’s founder & creative director, Ruchika Sachdeva, to Japan such as Kyoto, and Nobeoka city in Miyazaki prefecture where Bemberg plant is located. This immersive trip allowed her to gain a deeper understanding of not only the local craftmanship which has supported Japanese textile industry, but also Bemberg™’s heritage and its commitment to sustainability.

The next phase of the journey took Ruchika and BODICE’s team to two of India’s most renowned textile centers—Surat and Varanasi. In these bustling markets, they handpicked a curated selection of fabrics using Bemberg™ fiber.

Returning to the runway after a significant hiatus, BODICE’s latest collection is an ode to transformation—a narrative brought to life through an immersive experience that brings together textures, techniques, and silhouettes.

At the heart of the collection is a deep reverence for material and technique, drawing inspiration from Japan’s refined approach to craftsmanship. It features Bemberg™ by Asahi Kasei, a regenerated cellulose fiber that resonates with BODICE’s commitment to sustainability and responsible design. BODICE’s signature brush-printing technique created with Jaipur’s block-printing artisans, adds depth and texture, reinforcing the brand’s commitment to innovation. The collection also embraces upcycling through colour-blocking techniques, where fabric scraps are repurposed into dynamic, structured silhouettes. With a focus on longevity and wearability, each piece is designed to stay relevant and be timeless, while making way for a more responsible approach to fashion.

Takeshi Iitaka, General Manger, Bemberg Division of Asahi Kasei Corporation, Japan says” Bemberg™ has been operating its business with an eye toward coexistence with the environment since 1931, and is committed to collaborating with partners whose business philosophy aligns with this. From that perspective, this collaboration with BODICE is aligned with our business philosophy, and we are extremely honored that so many people will be able to learn about this collaborative event between our two companies, two countries, two cultures. We believe this collection which has innovative way of using fabrics made from Bemberg™ yarn will be exciting for all. “

The showcase unfolds as a refined interplay of movement and form. Set to evocative sounds in a lush spring landscape, the presentation reflects the collection’s core theme—transformation, balance, and evolving identity.

The Lenzing Group, a leading provider of regenerated cellulose fibers for the textile and nonwoven industries, and Speyer & Grund, specialists in vinegar essences and acidulants as well as long-term partners for LENZING™ Acetic Acid Biobased, announce the completion of a new acetic acid storage tank.

The new storage tank, built at Speyer & Grund’s site in Meerane (Germany), contains a tank for the exclusive filling with LENZING™ Acetic Acid Biobased. This is produced as a by-product in pulp production. The now increased tank capacity also enhances flexibility in the supply chain.

lisabeth Stanger, Senior Director Biorefinery & Co-Products: “Lenzing is a European model company of the bioeconomy with its biorefinery products and the most efficient use of the resource wood. We are pleased with the long-standing, trusting partnership with Speyer & Grund, which represents an important step towards an even more sustainable supply chain.”

“LENZING™ Acetic Acid Biobased has been an integral part of our Surig vinegar essence since 1983. The new tank solution means growth for us with maximum supply security. At the same time, we increase flexibility for delivery logistics as an important component for close cooperation with a strong partner,” explains Axel Rosener, Managing Director of Speyer & Grund GmbH.

The biorefinery process in Lenzing optimally utilizes the renewable raw material wood, the starting material for pulp and fiber production, and converts it into valuable products such as biobased acetic acid. LENZING™Acetic Acid Biobased, which has a carbon footprint over 85 percent lower than fossil-based acetic acid, is used in the food, pharmaceutical, cosmetic, cleaning, chemical, and textile industries and in textile sector processes such as washing, dyeing, and finishing.

Rieter has stood for pioneering innovation in textile technology for 230 years. Founded in 1795, the company has grown from a trading company to a global technology leader. With a clear focus on automation, digitization and sustainability, Rieter is shaping the future of yarn production and continues to set standards in the industry.

Rieter, a world leader in developing and manufacturing systems for yarn production with staple fibers, is celebrating its 230th anniversary this year – a history characterized by change, innovation and growth.

The Rieter success story began on April 15, 1795, when Johann Jacob Rieter founded the company J.J. Rieter & Cie. in Winterthur, Switzerland. Rieter started as a trading company for exotic spices and cotton, and on April 23, 1795, the first cotton bale had already arrived at the Waaghaus trading house on Marktgasse in Winterthur.

Initially involved in spinning mills and textile manufacturing, Rieter continued to develop over the 19th century and shifted its focus to building industrial machinery. Acquiring the buildings of the former Töss Abbey in Winterthur in 1833 was an important step. In addition to spinning mill machines, the company’s product line also included machines for winding, knitting, and weaving.

In 1891, Rieter converted into a stock company, which was a significant milestone in the company’s history. In the decades that followed, Rieter set new technological standards again and again. For example, the company was the first machine factory in Switzerland with electronic data processing and Rieter set up a modern laboratory for testing materials. It was joined by prototype workshops, a textile laboratory, and a test spinning mill to support further innovation.

Despite economic challenges, Rieter has always used times of crisis as an opportunity to increase its efficiency and hone its strategic focus. Along with its subsidiaries Accotex, Bräcker, Graf, Novibra, Suessen, SSM, and Temco, today Rieter is distinctive and well-known in the market. The company is a leader in spinning mill technology and contributes to sustainability in the textile value chain with state-of-the-art machines, systems, and components.

Rieter’s success is based not only on technological excellence, but above all on the people who drive the company forward. The approximately 4 800 employees worldwide are the company’s greatest asset. With their expertise, innovative spirit, and passion, they set new standards every day and play an active role in shaping Rieter’s future.

From Rieter’s perspective, the future of spinning mills is automated, digital, and intelligent. Research and development activities are being intensified – in both the areas of autonomous transport systems and collaborative robotics, as well as for ESSENTIAL, Rieter’s digital spinning mill platform. The goal is to fully automate the value creation process of spinning mills by 2027. This will enable spinning mills to reduce their yarn manufacturing costs and maximize their returns. Customers can then concentrate fully on their yarn business and rely on Rieter’s technology and know-how for their operations.

With 230 years of experience, strong innovative power, sustainable solutions and a global sales and service organization, Rieter looks to the future with confidence.

Archroma, a global leader in specialty chemicals towards sustainable solutions, will present its groundbreaking solutions for textile and fashion brands at this year's China Interdye. Archroma’s showcase will emphasize its High IQ® Lasting Color assurance program and the PHOBOTEX® range of durable water-repellent finishes, underscoring the company’s dedication to providing low impact, durable, and long-lasting garment solutions.

As the largest specialized exhibition for textile dyes and chemicals, China Interdye 2025 offers a key platform for Archroma to present its latest advancements. This year’s focus is on innovative solutions that help brands achieve not only their sustainability goals but also meet the increasing demand for high-performance, long-lasting products in the textile and fashion industries.

“China continues to play a pivotal role in global textile production, with increasing demand for lower impact and high performance solutions,” said Christine Cai, Vice President of North Asia, Archroma Textile Effects. “We are excited to bring our High IQ® Lasting Color and PHOBOTEX® solutions to China Interdye, enabling brands to deliver garments that combine outstanding functionality, durability, and sustainability.”

Brilliant colors and long-lasting garments
Archroma is evolving its well-established High IQ® performance assurance program to include its innovative and sustainable intelligent textile effects.

As the first High IQ® program to be reintroduced, High IQ® Lasting Color incorporates Archroma’s most innovative color-retention technologies to ensure that garments stay looking new for longer—with bright shades that retain their intensity and dark shades that stay dark. Powered by specially selected AVITERA® SE and NOVACRON® dyes, High IQ® Lasting Color also helps mills and brands reduce their environmental footprint by using up to 50% less water and energy in processing.

PHOBOTEX® Range: Durable Water Repellency
Another highlight of the showcase at China Interdye will be the PHOBOTEX® range of durable water-repellent (DWR) finishes. With over a decade of innovation in fluorine-free “C0” technologies, PHOBOTEX® is at the forefront of the shift toward non-PFC DWR solutions. These advanced technologies provide long-lasting protection and comfort, incorporating renewable raw materials for a more sustainable approach.

Designed to meet current and future industry standards, the PHOBOTEX® range includes fluorine-free hydro polymers and bio-based options. It is easy to apply to any substrate, offering solutions for a variety of end uses. From everyday stain protection without compromising fabric feel, to extreme environment defenses, PHOBOTEX® ensures versatility. Additionally, it enhances mill productivity with excellent runnability, enabling faster, trouble-free production and consistent results.

EDANA, the global association and voice representing the nonwovens and related industries, and INDA, the Association of the Nonwoven Fabrics Industry, jointly express their concerns regarding escalating trade tensions.

Both associations recognize the potential for countermeasures and reciprocal tariffs to negatively impact the nonwovens industry globally. The nonwovens industry is a global sector, with many companies having significant operations worldwide, including in Europe and the United States. It is crucial to avoid a harmful cycle of retaliatory tariffs that could have a net negative effect on economies worldwide.

Both EDANA and INDA urge policymakers to prioritize negotiations and seek mutually beneficial resolutions. “While we understand the need to address unfair trade practices, we urge regions to prioritize negotiations and seek mutually beneficial resolutions,” stated Murat Dogru, General Manager at EDANA. “Escalating tariffs create uncertainty and can disrupt supply chains, ultimately harming industries and consumers.”  

Tony Fragnito, INDA’s President & CEO added, “The nonwovens industry supports fair trade and a level playing field. We encourage policymakers to consider the broader impact of trade measures and to pursue policies that foster collaboration and free trade.”  

EDANA and INDA highlight the significant role of the nonwovens industry in providing essential materials for various sectors, including hygiene, healthcare, and manufacturing in many regions, including Europe and the United States. The associations urge the US and EU to recognize the interconnectedness of the industry and the importance of maintaining open trade between the regions. At a time when manufacturers are facing cost pressures from many angles, it is imperative that American and European manufacturers remain competitive globally and have long-term clarity on import costs.  

EDANA and INDA remain dedicated to promoting trade policies that support a strong and adaptable nonwovens industry worldwide. Choosing collaboration over conflict, and commitment to open markets and productive engagement, will pave the way for a future where trade acts as a catalyst for shared prosperity and innovation, to the advantage of industries and consumers alike.

The full potential of advanced coating and finishing technologies for the production of technical textiles will be outlined by Monforts specialists which takes place in Atlanta, Georgia, in May.

The company and its US representative PSP Marketing, of Charlotte, North Carolina, will be part of the VDMA German Pavilion at the show, at stand 3231 within the Georgia World Congress Center.

A wide range of technical fabrics is now being successfully created with MontexCoat coating units in comination with Montex stenters, including tents, tarpaulins and awnings, black-out roller blinds and sail cloth, automotive interior fabrics and medical disposables.

Full PVC coatings, pigment dyeing or minimal application surface and low penetration treatments can all be carried out with the extremely versatile system. Solvent coatings in explosion-proof conditions, knife coating, roller coating and screen printing are further options and the MontexCoat has been engineered to enable users to switch quickly from one fabric run to the next without compromising on the economical use of energy or raw materials.

“There has already been terrific interest in the MontexCoat and the range of different techniques it enables and we’re far from exhausting its potential uses,” says Achim Gesser, Monforts Area Sales Manager who will be at the show in Atlanta. “For companies who don’t need such flexibility, the economical coaTTex unit is exclusively dedicated to air knife and knife-over-roller coating.

“At our ATC in Mönchengladbach, Germany, however, a MontexCoat unit has been integrated into a full Montex technical textiles pilot line, on which our customers can run trials of new fabrics and finishing formulations in widths of up to 1.8 metres. This line has been engineered to provide the ultimate in precision coating and finishing in industrial-scale trials.”

To fully demonstrate what’s possible, the Montex line at the ATC is able to treat materials not only at temperatures of up to 320°C, but apply separate coatings on the two sides of certain materials at different temperatures, within a single pass through the machine. To achieve this, the first two chambers of the stenter are fitted with TwinTherm burners for individual top/bottom heating. A temperature differential of up to 60°C can be achieved between the upper and lower nozzles within the chamber, depending on the treatment parameters.

“There are many applications where employing two separate temperature treatments is beneficial, such as floorcoverings – where the textile face fabric is treated at one temperature and the rubber backing at another – as well as PVC flooring employing chemical foams, black-out roller blinds with heavy backings or PTFE-coated filter materials,” Gesser explains.

Another key feature of the technical textiles line at the ATC is the Montex stenter’s special stretching device which is capable of pulling ten tons in length and ten tons in width – a huge amount per square metre of fabric and necessary in the production of materials such as woven or 3D knits for high temperature filter media.

Monforts also offers the special T-max grease-free stenter chain for high temperature treatments up to 320°C, at machine speeds up to 100m/min and transverse tension up to 2,500 N/m with the benefits of no maintenance and no grease marks on fabric.

“Technical textiles are extremely diverse in their end-use applications but the needs of the manufacturers of very different materials are still uniform in many respects,” says Gesser. “European-built Montex stenters provide maximum finishing efficiency and many of our customers are operating them 24 hours a day over seamless shifts.”

Existing customers include manufacturers in the fields of home textiles, geotextiles and automotive fabrics, as well as functional materials and dedicated Montex lines have also been supplied to producers of airbags, flame retardant barrier fabrics and spacer fabrics.

“Techtextil North America is a very important show for us because technical textiles are a key pillar of our production programme,” Gesser concludes. “North America is one of our major markets and we are looking forward to reconnecting with existing and potentially new customers at this always-vibrant show.”

Researchers at Cornell have developed a new type of smart clothing that can track a person’s posture and exercise routine but looks, wears – and washes – just like a regular shirt.

The new technology, called SeamFit, uses flexible conductive threads sewn into the neck, arm and side seams of a standard short-sleeved T-shirt. The user does not need to manually log their workout, because an artificial intelligence pipeline detects movements, identifies the exercise and counts reps. Afterward, the user simply removes a circuit board at the back neckline, and tosses the sweaty shirt into the washing machine.

The team envisions that SeamFit could be useful for athletes, fitness enthusiasts and patients engaged in physical therapy.

Most existing body-tracking clothing is tight and restrictive or embedded with chunky sensors, according to Catherine Yu, a doctoral student in the field of information science and lead researcher on the project.

“We were interested in how we can make clothing smart without making it bulky or unusable,” Yu said, “and to push the practicality, so that people can treat it the way they would usually treat their clothing.”

Alternatively, athletes can choose fitness trackers, like smartwatches or rings, but these are extra devices that people may not want to wear while exercising, and can’t track movement across the entire body.

“Not everyone is willing to try out a new wearable form factor, but people will have clothes on,” said co-author Cheng Zhang, assistant professor of information science in the Cornell Ann S. Bowers College of Computing and Information Science. “We provide a very neat form factor that is always on you.”

Their study,“SeamFit: Towards Practical Smart Clothing for Automatic Exercise Logging,” published in March in the Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies, and will be presented at the UbiComp/ISWC 2025 meeting in October.

Most mass-produced clothing has seams, which Yu realized could be exploited to make a comfortable, affordable piece of smart clothing. She constructed three SeamFit shirts – in small, medium and large – using a home sewing machine to attach conductive threads on top of the seams. The three sizes allowed users to choose a looser or tighter fit, but did complicate the process of interpreting each user’s movements.

To test the shirts’ performance, the team recruited 15 volunteers, who did a series of 14 exercises – including lunges, sit-ups and biceps curls – while wearing SeamFit. Without any calibration or training for each user, SeamFit’s model classified the exercises with 93.4% accuracy and successfully counted reps, with counts that, on average, were off by less than one.

SeamFit works because when people exercise, the threads’ capacitance – their ability to store charge – changes as the threads move, deform and interact with the human body. The circuit board at the back neckline measures the capacitances and transmits them through a Bluetooth connection to a computer. A customized, lightweight signal-processing and machine-learning pipeline then deciphers the movements.

After the workouts, Yu washed and dried the shirts at home.

The project is a new iteration of SeamPose, a previous effort to track body postures using conductive threads in eight seams of a long-sleeve T-shirt.

The team envisions that this type of unobtrusive smart clothing could be especially useful for athletes logging their exercise routines and for physical therapists monitoring the progress of patients at home.

More broadly, this type of technology could assist with human-AI interaction, because by tracking human movements and activities, AI can better understand when to interact and when to wait – such as when someone is eating or sleeping.

Enabling AI to understand human activity is the main focus of Zhang’s Smart Computer Interfaces for Future Interactions (SciFi) Lab, which develops new, AI-powered wearable sensing systems, to enable AI to comprehend human activities and intentions in everyday settings and provide support when needed.

“While this paper demonstrated the approach for a simple garment, we believe it can easily be adapted to a wide range of garments and could take advantage of the complex seam patterns of advanced sportswear,” said co-author François Guimbretière, professor of information science in Cornell Bowers CIS and the multicollege Department of Design Tech.

To create SeamFit, Yu set up a “little sewing factory” in the lab. However, she is currently exploring how the manufacturing process could be affordably scaled up, using industrial serger machines – which sew and make seams using three or four threads simultaneously – and more robust conductive threads.

“By just replacing a single thread in this mass manufacturing process, all of the clothing could easily become smart and be able to have this motion tracking capability,” Yu said. “I’m imagining one day, you open your closet and there’s really no difference between smart and nonsmart clothing.”

Additional authors on the study include Manru Mary Zhang ’25 and Luis Miguel Malenab ’25; Chi-Jung Lee and Ruidong Zhang, both doctoral students in the field of information science; and Jacky Hao Jiang, a visiting undergraduate from Rice University.

Funding for this work came from the National Science Foundation.