POC Axion Spin MTB HelmetPOC Axion Spin MTB Helmet Lightweight, well ventilated and with extended coverage around the temples and at the back of the head, the Axion SPIN provides finely tuned trail protection. Including a 360 size adjustment system that makes it easy to find a precise fit, the helmet features a fully wrapped unibody shell for improved structural integrity. The adjustable breakaway peak works to enhance safety in a crash, as it reduces forces transmitted to