Nothing tops the comfort of pure cotton. Except, of course, BETTER cotton. That’s why our 300 thread count percale is made from Supima®, the cream of the cotton crop, grown exclusively in the western and southwestern United States. The result is an incredibly soft, smooth fabric with off-the-charts comfort. This solid duvet cover features a knife-edge construction and internal ties to secure your comforter in place. Shams have envelope closures for easy on/off.