Downia - The Downia Four Seasons White Duck 50/50 Feather & Down Duvet is designed for year-round use with its two 50% white duck down and feather duvets. Although both duvets have the same composition of 50% duck down clusters and 50% duck feathers, they actually provide varying warmth for use in any season with a lighter and heavier duvet. Come winter, the two duvets can be clipped together to create extra warmth.Features:280-thread count-down proof cotton casing for a luxury feelWhite sateen pipingSewn through cassette for even fill to prevent cold spots.