Duvet Cover: 100% Polyester. Weighted Quilt: 100% Cotton. Unique Huggaroo design guarantees perfectly distributed weight forever. No sagging or shifting ever. Soft, luxurious minky fabric – dotted on one side, smooth on the other. The entire blanket is machine washable. The perfect weighted blanket for children weighing between 30 and 70 lbs. A great portable weighted throw blanket for adults. Great to use while reading or watching TV.