Lightweight outer shell is constructed from technologically advanced composite materials in four sizes to ensure a superior fit. Fitted with E-2, the latest generation of MIPS, an integrated low-friction layer designed to reduce rotational motion transferred to the brain from angled impacts to the head. Multiple-density inner helmet liner. Visor is attached to helmet shell with patented system that allows easy release in case of an impact. Two visors supplied with helmetone Regular height and one Super High height. Alpinestars patented A-Head adjustableheight top interior helmet pad height. Superior ventilation system utilizes 19 intake and 5 exhaust ports. Helmet side shell shape combined with soft EPP foam prevents damage to collarbone in event of crash. Emergency release and removable cheek pads. 3D contoured foam. Removable comfort liner uses anti-moisture and antibacterial fabrics. Hydration system prepared. E-Ject prepared. DOT and ECE 22.05 certified.