Amazon.com: Nikken - KenkoTherm - Back Belt - Orthopedic 。KenkoTherm® Wraps provide a contoured fit and support where needed. The KenkoTherm® Back Belt can be worn alone but is designed with a back pocket that holds a Kenko MagFlex® in place. ● Orthopedic design ● Support with flexibility ● Secure, adjustable closures ● Hand washable MATERIALS Polyester fiber, cotton fiber, acrylic, polyurethane CARE INSTRUCTIONS Hand wash in warm water and mild detergent. Rinse thoroughly and air dry. Belts are 6.5” wide. KenkoTherm® Back Belt - Large #18321 Up to 42”