The Alpinestars GP Force Chaser one-piece leather motorcycle suit is CE classified AA with Alpinestars GP CE protectors at the elbows, shoulders and knees with Nucleon Bio-Flex hip protectors. Removable and replaceable knee sliders provide added impact resistance and DFS dynamic Friction Shield Lite sliders on the shoulders. The GP Force Chaser is compatible with the Alpinestars Tech-Air 5 Airbag System for optimum protection. (sold separately) A leather multi-panel construction with strategically accordion stretch panel inserts gives an anatomical performance for sports riding and a superior fit. Inner knee suede reinforcement provides added grip, while calf expansion panels with ribbed stretch inserts allow a custom fit. The aerodynamic back hump is ventilated for maximum airflow, and perforation in critical areas provides optimum air circulation.