Wamsutta 100% Cotton Luxury Gingham Flannel Twin Duvet Cover, Laurel Twin Duvet Cover (68" by 86") 100% cotton 5.4 oz flannel napped 3 times on each side for softer feel and hemstitch trimmed for extra elegance and luxury. Cotton flannel is seasonless; warm and cozy in cold weather; cool and absorptive in warm weather. Preshrunk to minimize shrinkage. Made in Portugal Machine wash warm. Tumble dry low, remove promptly