Brand NEW 2 Pack Knee Compression Sleeve Knee Brace for Men Women Knee Support for Running, Basketball, Weight-lifting, Gym, Workout, Sports One Size Gray One Size fits 12-21.5inches. You can determine the size based on the thigh circumference 5 inches above your kneecap (This is the most accurate) ADJUSTABLE UNIQUE BiDIRECTIONAL SUPPORT Alternating Strong Closures Stabilize Patella to Reduce Knee Pain. Others Have Straps on One Side Which Provide Uneven Support. MEASURE BOTH Circumference Around Knee and Thigh for PROPER FIT. Innovative Design, Excellent Comfort - The knee brace on both sides with radian design, in line with human engineering. In the center of the patella, there is an open design, which can make the knee brace fit the knee perfectly and improve the comfort during use. OPEN PATELLA DESIGN For Support and Compression Around the Kneecap and Tendon Areas to Heal Knee Injuries. Also 2 Flexible Spring Stabilizers Provide Better Knee Cap Protection and Stability. See pictures for more item details. Trusted Seller-Fast Ship!