The Thermoskin Thigh/Hamstring provides protection support and heat therapy for the thigh and hamstring. The support aids in the prevention and rehabilitation of quadricep and hamstring muscle strain. Thermoskin Thermal Supports utilize the exclusive patented Trioxon lining that is clinically proven to capture your natural body heat. Unlike other products Trioxon allows your skin to ventilate and remain comfortably dry even with long-term use. Competitive products trap the perspiration resulting in discomfort slippage risk of infection and unpleasant odor. The Trioxon lining creates a microclimate to help the skin breathe while still providing effective heat therapy. This is the secret of Thermoskins long-term comfort for the user. You can even wear Thermoskin for extended periods of time without the discomfort you would have with other products. Color: Black. Size: Large 21 1/2 - 23 1/4.