Whether you're racing, lapping a bike park, or hitting your local trails, the Project.23 Glass Fibre will keep you protected and comfortable. The Fiberglass shell offers shock absorbency and incredible value for money while the 23 big bore vents for no compromise airflow will keep you cool. Best of all, the Project.23 Glass Fibre uses our S.E.R.T (Seven Energy Reduction Technology) slip-plane system. - 23 big bore vents for no compromise airflow - S.E.R.T system reduces impacts causing C.T.E - The most ventilated full face hardshell helmet on the market - Fiberglass shell offering shock absorbency and incredible value for the money - CRV (Crash Release Visor) system allows the visor to release on impact to help reduce rotational forces - Easy position visor angle no bolts needed - Injection-molded branded trim to protect fiberglass helmet shell - AGION anti-microbial liner helps to keep things smelling fresh - TF (Through Flow) Goggle ventilation allows full airflow - Quick-release liner for easy washing and cleaning - Supplied with P.23 custom drawstring bag - Fidlock magnetic closure - Meets CE, CPSC, AS, ASTM F1952-15 standards - Sizes XS, S, M, L, XL, XXL (size large weight 1010g)