Our graduated compression Premium Arm Sleeves are designed to increase blood flow and decrease muscle vibration during the throwing motion to keep your arm feeling “live” throughout the game. THROW HARDER, LONGER: Graduated compression sleeves increase blood flow to the arm by dilating the player’s arteries by 40% and by compressing the veins.  Increased blood flow means more oxygen which helps the player’s arm feel rested and “live” throughout the game. KEEP YOUR ARM COOL: In addition to keeping your arm feeling “live”, increased blood flow actually keeps you feeling cool and fresh while you play. REDUCE INJURIES: Our graduated compression arm sleeves also reduce muscle and tendon vibration during the throwing motion, essentially keeping everything in place, which over time helps reduce the potential for injuries. FASTER RECOVERY: Graduated compression sleeves and leggings are used throughout sports to help with recovery after games and practices by removing lactic acid and increasing blood flow and oxygen delivery.  As great as our arm sleeves are for playing, they are just as good for post-game recovery. Simply wear the sleeve for an hour after playing and feel the difference. SIZING:   HEIGHT WEIGHT SIZE 4’8 - 5’2 60lbs  - 115lbs YTH 5’3 - 5’9 115 lbs - 170 SM/MD 5’10 - 6’2 170 lbs - 215 lbs L/XL 6’3 - 6’9 215 lbs - 270 lbs XXL