The Nike Vapor Elite Lacrosse Shoulder Pad Liner has an increased total number of splits through the pad to improve flexibility in all directions. Multiple stretch zones improve all-around mobility. VELCRO® brand fastener flaps prevent straps from dislodging from pad. Nike Dri-FIT® technology keeps moisture away from body. Recommended for the advanced player. Size M is designed for players who weigh 91-140 pounds. Size L is designed for players who weigh over 140 pounds.