The Alpinestars Supertech S-M10 Carbon helmet uses a lightweight carbon fiber shell that comes in 4 different shell sizes. It's visor release system holds the visor/peak securely, but releases in the event of impact. Alpinestars provides 2 peaks with 2 different angles depending on the rider's preference. Ventilation is top notch with numerous inlet and outlet ports connected with a series of airways that snake through the interior. The internal liner is an amalgamation of protective and comfort materials. A multiple density inner liner absorbs impacts while a MIPS -E2 liner protects against rotational energy. Alpinestars' proprietary A-Head system is an adjustable head frame that allows you to adjust how the helmet sits on the head. Soft EPP foam cushions the bottom lip of the helmet to help avoid collarbone injury in the event of a crash. Emergency removable cheek pads along with a design prepared for the E-Ject helmet removal system make the Alpinestars Supertech S-M10 Carbon Helmet a protective motocross helmet filled to the brim with safety features.