Description: Premium MaterialFilled with 90% white duck down, lightweight, soft, made of ultralight high density 20D 400T nylon, waterproof, windproof, effective anti drill down. Down SlippersCan be compacted into small size, storage bag included for convenient storage and carry. Winter Duck Down BootiesSoft lightweight home couples booties for women, men, big girls/ boys for bedroom, studying room, living room, office, dorm, and etc indoor wear. Elastic DesignElastic band designed, easy to dress or take off, better windproof and keep your feet warm in cold winter. Wide ApplicationSuitable for men women outdoors and indoors, home use, picnic, camping tent, hiking, traveling, backpacking, backyard, beach, sleeping bag, etc. Specification: Material: 20D 400T Nylon Size Chart: Size M (36-40): Length 25cm/9.84inch Size L (40-44): Length 28cm/11.02inch Package Includes: 1 Pair Down Booties Socks Slippers 1 Storage Bag Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!