Elbow Support 3M Ace Small / Medium Left or Right Elbow Black. The 3M elbow support provides mild compression that supports weak, injured or stiff elbows A stretchy material fits snugly in place and moves with the body while you remain active The stitched neoprene panel retains heat, improving blood circulation This small/medium panel is also breathable to let sweat evaporate and keep skin dry Reinforced edges prevent the Ace compression elbow support from slipping out of placeIt fits onto either the left or right elbow for convenient versatility.