The Extreme Flex Shield Chest and Arm Protector is built on performance with two proven technologies. The chest and shoulder wings are designed with a combination of two advanced materials: ADIPRENE©, which absorbs impact in the chest to kill the rebound, and ADIPRENE+© , which provides energy rebound in the top of shoulder wing to kick the rebound out of play. Dual Adjustment system offers a full arm size length adjustment in addition to torso adjustment at the shoulders to customize fit and balance weight.