Athletic Protective Gear: This lacrosse elbow pad for men uses body-mapped SmartFlex technology that stays flexible when playing but hardens on impact Lacrosse Elbow Guard: The pad creates vents as you bend your arm to reduce heat build-up; breathable compression sleeve provides a secure fit Padded Elbow Compression Sleeve: Perfect for football, lacrosse, or basketball, this elbow protector offers protection where defensemen need it most Protective Elbow Sleeves: The silicone gripper at the top of the padded elbow strap pads keep guards from slipping during play Protective Gear for Athletes: G-Form provides the best protection for athletes using materials that protect the fields they play on SIZE Chart : M - 11-12.25", L - 12.25 - 13.5", XL - 13.5 - 15.5"