Polyester,cotton Poly cotton fabric. 52% Cotton 48% Polyester. Care Instructions - Machine wash cold using mild detergent. Wash dark colors separately. Tumble dry low. Remove promptly. When it comes to sleep the best thing you could do is to be comfortable and warm, this polyfill comforter is lightweight and breathable with 52% cotton that will not make you hot at night. It is crispy soft to touch and machine washable.