The duvet used in winter is to be stored in summer and the duvet used in summer must be stored in winter. Please, take note of the following: Store your duvets at a dry and well-ventilated place. Down and feather duvets might get moist in damp places which make the down and feathers stick together in their shell.
Besides bedding products should not be compressed over a long time period. A sufficiently sized shell that does not affect their fill power, is necessary to protect the down-and-feather-filled duvets and pillows from dust. They can be placed for instance in an old plumeau case or a cotton bag. Plastic bags are unsuitable to store down-and-feather-filled duvets and pillows.
Moreover, special encasings to store them are commercially available.
Quelle
Verband der Deutschen Daunen- und Federnindustrie e.V.
Source URL