Support Your Active Life. Helps relieve weak or sore knees Open patella design for support Side air vents for fit and comfort Comfortable neoprene blend helps knee retain warmth Adjustable straps for proper support, comfort and fit Side ventilation holes for breathability and reduced bunching behind knees Easy to apply Futurooffers a wide range of quality products to Support Your Active Life. Each is designed to offer optimal support, comfort and fit. Developed in collaboration with a panel of physicians, surgeons, and medical specialists. Size:For left or right knee, this support has been designed with three adjustable straps in order to create a customized fit for most body types. Measure around knee. Adjust to fit 13. 0 - 17. 5 in 33. 0 - 45. 7 cm. UPC: 051131201408 Weight: 0.88 lbs