Alpinestars SM3 Radium Youth Motocross Helmet, yellow/black, size Y/M (50/51)

Anatomically engineered and profiled specifically for youth and younger riders, the all-new SM3 Youth Helmet is optimized for MX, Enduro and Off-road use, and features a whole raft of technologies and innovations taken from Alpinestars range of adult helmets to deliver the optimal blend of performance, protection and comfort.Features:- 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 light weight.- Lightweight outer shell is constructed from a technologically advanced impact resistant thermoplastic in three sizes. The SM3 Youth weighs 1060g (ECE) and 1170g (DOT).- Separate versions of the shells for DOT and ECE requirements, the DOT certified version of the helmet's inner shell is constructed with a composite fiber assembled between the outer shell and the EPS liner for maximum protection against impacts.- The fit can be t