Alpinestars Supertech M5 Action MX Helmet Contains CLEARANCE The following standards apply to

The following standards apply to this product:

Single pane lens

Tri-Fleece Liner

smaller and ergonomically optimized for performance

Stretch properties and an ergonomic fit add mobility for smooth and easy layering under your outerwear

Alpinestars Supertech M5 Action MX Helmet Contains CLEARANCE The following standards apply toThe all new SM5 helmet is the result of more than five years of intensive study, development and testing. We scrutinized every possible aspect to engineer a helmet that is safe and thoughtfully designed to deliver optimal protection and comfort. This lightweight helmet features a thermo injected shell incorporating a special polymer blend enhanced by varying degrees of thickness that is engineered to deliver the optimal combination of impact