Duvets have been filled with goose feather and down for years because of the warmth and luxurious feeling they bring to a good night\'s sleep. This Simply Sleep duvet from Gallery Direct is made from pure cotton in a 210 thread count, which has been cleverly sewn into a baffle box stitching, the beauty of which is that it prevents the insulating feathers and down from clumping and leaving cold or uneven patches. This also means the duvet aerates well which, alongside the 80/20 combination of goose feather down, means this duvet warms you beautifully without feeling heavy or stifling.