SM3 Youth Solid Helmet ECE06/DOT Size:YS it works with the helmet

it works with the helmet during impact to help divert compressive forces away from the neck and spine

crotch and armhole

the KMX-5 combines comfort and performance fit with a full floating arm construction and rear stretch panel for freedom of movement and a lightweight two-layer main shell with moisture-wicking lining

• Front and rear accordion flex bellows made from lightweight microfiber for improved flexibility

SM3 Youth Solid Helmet ECE06/DOT Size:YS it works with the helmetAnatomically 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.