Firm, closed-cell padding that resists bottoming out. Can be applied to splinting material prior to immersion in hot water. Cuts easily. Washable. 1/8" (3.2mm) is great for back and ankle supports. 1/2" (1.3cm) is ideal for covering sports casts during participation in activities. 17-3/4" x 24" (45cm x 61cm). Latex free.