they offer an athletic "second skin" fit and superior ventilation

with optimized capacity and access through a convenient top zipper closure

along with 3D-molded face foam

they use a synthetic microfiber chassis with accordion flex zones

jettson sm3 youth helmet ece06 YGroup_3721022 they offer an athletic "secondAnatomically engineered for younger riders, the all new S M3 Jettson Youth Helmet is Alpinestars' most advanced off road head protection for the next generation of racers. Featuring a thermo injected shell with a patented visor release system and rotational impact protection, it exceeds ECE 22. 06 standards for superior safety. This lightweight helmet delivers maximized ventilation and a customizable fit for ultimate track performance and comfort.