When I opened the box, I was very disappointed on how thin and light the duvet was but after using the duvet the first night, I was very surprised at how comfortable and warm it was.  We sleep with the window open a little in the winter and our bedroom gets quite cold and this duvet keeps us toasty warm!  My husband is harder to keep warm and he loves this duvet.  I haven't washed it yet so I cannot comment on how it fairs.