Supertech SM10 Meta 2 Helmet by Alpinestars Lightweight outer shell is constructed from technologically advanced carbon in four sizes for best fitting. DOT / ECE 22/05 certifications. Multiple density inner liner. Fitted with E-2, latest generation of MIPS, integrated low-friction layer designed to reduce rotational motion transferred to the brain from angled impacts to the head. Visor attached to helmet shell with patented system that will allow easy release in case of crash. Adjustable top pad height (Alpinestars patented A-Head system). Maximized ventilation with 19 intakes and 5 exhaust ports. Side shell shape coupled with soft EPP foam prevents damage to collarbone in event of crash. Emergency release and removable cheek pads, 3D contoured foam. Removable comfort liner, anti-moisture and anti-bacterial fabrics. Hydration prepared. E-Ject prepared.