For treatment of arthritis, sports injuries and repetitive strain. Designed to help with self-management of arthritic joint symptoms, sports and repetitive strains. Provides support and temporary relief of painful tendons and joints. Unlike traditional heat therapy, this is a comfortable, longwearing, go anywhere heat treatment. Helping to keep you active. Supports without limiting motion. Large thumb opening for easy application. Wrap style for better fit. Unique three-layer construction; first layer is Hydrolon terry which wicks moisture away from skin to keep you dry and comfortable. Perforated Hypolan blend middle layer is comfortable, cushioned and breathable, provides light compression which helps counteract tissue swelling. Durable nylon outer layer retains body's own heat, to naturally increase blood flow to damaged or painful joints and muscles to help encourage healing and pain relief. Antimicrobial and latex free.