The Adrenaline X1 series is new for the 2011-2012 season. These protective models are the next step for young lacrosse players who are taking their game to the next level. The focus is to provide quality, ultra-protective equipment that fits properly and functions without you even knowing it's there. The elbow guard has fully adjustable elastic straps for a custom fit on every player. The outer shell is durable nylon with a new fade design. This holds the internal injection-molded ABS plastic caps for elbow protection. Tough, single-density foam runs throughout the pads. Sold in pairs. Size S is designed for players under 4'6" and less than 90 pounds. Size M is designed for players who are 4'6"-5'6" and weigh 90-140 pounds. Size L is designed for players who are at least 5'10" and weigh over 140 pounds.