Featuring a single Youth shell size, the MX-46Y can be custom fitted from Youth Small up to Youth Large with just padding kit changes (sold separately). This way the helmet can grow as they do. 19 Vents create maximum airflow, keeping you cool and comfortable lap after lap. Maximum airflow is achieved through industry leading 19 vents. Removable, washable interior allows easy cleaning and custom fitting via replacement padding kits (sold separately). High flow, removable mouth vent with washable filter. Vented roost deflector. Large eyeport allows large goggles and better vision. Fully adjustable, flexible and vented visor designed for maximum vision and protection. Lightweight shell: Youth only 2.2 pounds. DOT Approved.