Tanac Artificial Muscle Knee Supporter Size: L (Knee circumference/38-43cm Thigh circumference, 10cm above the knee/ -50cm) Color: White Made in Japan Warm fabric with moisture absorption and heat generation/moisture absorption and desorption Uses "Warfill" for comfort in both summer and winter. The uniquely formulated silicone with excellent elasticity Supports bending and stretching of the knee by following the movement. Recommended knee supporter for the elderly, sports, and running. Supporter