Lightweight composite outer shell construction. Multiple-density EPS lining for added protection. MIPS layer reduces rotational impact motion. Easy-release patented peak attachment system. Adjustable top pad height for an optimal fit. Maximum airflow with 19 intakes and 5 exhausts. Soft EPP foam prevents collarbone damage. Emergency release cheek pads in event of a crash. Removable and washable anti-bacterial interior. Compatible with Alpinestars hydration pack. Weighs approximately 1360g (+/- 50g).