Body Glove 90126 MVP Breathable Neoprene Stabilizing Knee Support, Black, Medium Breathable Trade winds Open-Cell Neoprene For Comfort In Warm Conditions Four Sizes For A Custom, Comfortable Fit Open Design Keeps Pressure Off Patella, Straps Wrap Easily For Firm Support Without Binding Breathable Tradewinds open-cell neoprene for comfort in warm conditions Four sizes for a custom, comfortable fit Open design keeps pressure off patella, straps wrap easily for firm support without binding Steel stays for lateral and medial support Measure around leg 3-inch above kneecap. Medium fits 14-inch to 15-inch