Body Glove 90203 Breathable Neoprene Open Patella Knee Support, Black, Large Fully Lined, Smooth Interior Stabilizes And Supports Knee: Fits Either Leg Breathable, Open-Cell Neoprene For Comfort In Hot Conditions Breathable, open-cell neoprene for comfort in hot conditions Contoured, sized fit Stabilizes and supports knee: fits either leg Fully lined, smooth interior(the knee cap has hole in the centre) Measure around leg 3-inch above kneecap. Large fits 15-inch to 17-inch