GMAX® is excited to introduce the ALL NEW AT-21Y designed competitively from the ground up. The AT-21Y is constructed from a lightweight Polycarbonate shell offering superior protection and exceeds DOT and ECE safety certifications. Internally, the helmet is equipped with an inner sun shield, SpaSoft™ interior and a NEW quick release buckle system. The removable, adjustable interior is designed so the helmet can grow as your child does.