100% Cotton Imported Crystal velvet – Super soft, safe and healthy, constant temperature protection. Thicken design, suitable for spring, autumn and winter. Detachable sleeves, Detachable pillow or cap, detachable feet tank, adjust as needed Perfect sack design allows room for kicking while keep warm whole night. Durable and Washable, can be used for 3 years. Size: 100cm(0-2 Years); 120cm(2-4 Years);135cm(3-6 Years). Package Contents:1X .