Impacto Pull-on ankle support for the prevention of repetitive strain injuries (RSI). Fits left or right. Natural heat therapy aids in the prevention, treatment and rehabilitation of sports injuries, arthritic pain and repetitive strain injuries. Multi-layered design with reinforced stitching for durability Lining wicks away moisture and helps prevent skin irritation. Non-porous rubberized material captures body heat, increases circulation and provides compression and support. Durable nylon outer fabric assures long lasting wear