An ultra-lightweight protective system offering excellent upper body protection against impacts & roost, the protector features front & rear hard shell plates backed with bio-foam padding for a secure & comfortable snug fit. Quick & extremely easy to put on it provides extended padding to protect against tire roost without obstructing arm movement & is fully compatible with Alpinestars Bionic Neck Supports. Features Features a new CE-certified back protector. Extended padding to offer more protection against tire roost without obstructing arm movement. Removable shoulder pads & back protector for high levels of customization. Stone shield & back protectors are constructed from a high performance polymeric blend for optimized flexibility & excellent weight saving. The protector’s plastic shells are perforated for maximum breathability & cooling ventilation. Adjustable elastic closure system features newly designed, quick & easy-to-use buckles that fit a broad range of rider body sizes. Thermoformed padded chassis for optimized levels of comfort & close-to-body fit. Adjustable shoulder straps for optimal fit. Bionic Neck Support compatibility. Silicon BNS pull tabs for easy & safe engagement of the BNS. Integrated Y-strap system for modular use of the back protector with fast & convenient mounting.