State-of-the-art protection. Backed by extensive research and data from our millions of on-field impacts. Features: Recommended for Youth Players through Junior High The Flex System Cam Loc(TM) Retention System Tru-Curve Liner System All-Points Quick Release(TM) Patented Side Impact Protection (PSIP) Quick Change Liner Attachment System Occipital Lock Air Fit Liner Strap Loc ABS Shell