By using the corner-width rectangular prisms

Designed for MotoXross racing on medium to hard terrains providing maximim control and straight-line stability

Anodized aluminum construction reduces the possibility of damaging your swingarm

All armor inserts are removable for easy washing

over-charge protections

Alpinestars - Supertech M10 Helmet - Solid Size:Medium By using the corner-width rectangularThe goal of the Alpinestars Supertech family of helmets was to create the most advanced, protective, and performance enhancing helmets possible for riders worldwide. With the S M10, Alpinestars' Helmet Development team engineered the helmet to offer the perfect blend of excellent ventilation, and unsurpassed comfort, to create a helmet with the lightest weight possible, all without compromising on any other front. The S M10's design offers a smooth,