Alpinestars Supertech M5 Action MX Helmet YCRF_bicycle_helmets Modern mountain bikes are amazing

Modern mountain bikes are amazing and have allowed riders to do more than ever

With a pre-curved fit to mirror your every move

with vent plugs installed for cold weather use

Outer shell material: PWR|Ripstop 10D

and forearm areas

Alpinestars Supertech M5 Action MX Helmet YCRF_bicycle_helmets Modern mountain bikes are amazingThe 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