The Fox V2 Mastar Helmet is expertly crafted inside and out, providing reliable protection and a graphically stunning design. The helmet exceeds both 22.05 and D.O.T certifications. A fiberglass shell provides durability, and a dual density EPS liner offers trustworthy defense should you end up taking a soil sample.The MX helmet has exceptional ventilation to prevent overheating on warm days at the track. Ten intake and four exhaust vents provide fresh air and allow heat to escape. This system supplies cooling relief from the smoldering heat.By designing the helmet with 3 shells and 4 EPS dimensions and offering six helmet sizes - ranging from XS through 2XL - we ensure you find your exact fit. An accurate fit is paramount because a motocross helmet won’t do you any good if it’s sliding around on your head.