Advanced Fiberglass Composite Weave Shell Construction Premium Integrated Matrix (PIM) construction, which incorporates three different materials - carbon fiber, aramid and fiberglass - to create a unique woven blend that produces a shell both remarkably strong and noticeably lighter.Max Air-flow Top Vent: Variable air flow is adjusted by glove-friendly dials on each intake vent.Superior automatic shield locking system with spring controlled lever.5mm Initial shield position by releasing shield locking system.It comes standard with both the 2D Light Smoke Shield and the Pinlock Insert.HJC Helmet maintenance kit.RapidFire™II Shield Replacement system: Simple and secure shield ratchet system provides ultra-quick, tool-less removal and installation for efficient operation. ECE 22.05 and ACU Gold approved for use on the road and the track.