This Royal Elite Superior White Goose Down Duvet is filled with superior white goose down of 700+ fill power. Goose down has excellent thermal insulation properties. It can trap and retain body heat effectively. It also can wick away moisture from body, creating a warm and dry sleeping environment. It is super lightweight and soft, which allows better breathability. It is hypoallergenic and durable. Baffle box construction creates extra fluffiness. 100% duvet shell of 400 thread count provides silk soft touch feeling. This superior white goose down duvet offers luxurious softness and fluffiness all year round. Twin 66 x 90'', Double 80 x 90'', Queen 90 x 90'', King 106 x 90''.