Body Glove 90162 Sized Breathable Neoprene Elbow Support, Black, Medium Breathable, Open-Cell Neoprene For Comfort In Hot Conditions Contoured, Sized Fit Mauser Taped Seam For Added Strength Breathable, open-cell neoprene for comfort in hot conditions Contoured, sized fit Mauser taped seam for added strength Fully lined, smooth interior Measure around center of elbow joint. Medium fits 10-1/4-inch to 11-inch.