Airflex is extremely breathable material for cool comfort during active use. It is specifically designed for air circulation, heat transfer and moisture wicking away from the body. Any activity where excess heat or perspiration could be felt under the brace is an ideal application for this product. Additionally, it is stretchy and smooth for the highest level of comfort. The Ortho Active Airflex Hinged Knee Brace is designed to provide medial and lateral support to the knee, as well as stabilize the patella and provide compression. The hinges may be removed and molded to the leg to provide a custom fit.