Alpinestars SM5 Action ECE MX Helmet

The all-new Alpinestars SM5 Action ECE MX helmet is the result of more than five years of intensive study, development and testing. Alpinestars 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 protection and lightweight, while the five-density EPS liner ensures the correct density in the correct area