Nutcase Little Nutty Dino-Mite Matte Helmet, Green, X-Small Adjustable Spin Dial allows for perfect fit Anti-Pinch, Magnetic Buckle/chinstrap for one-handed operation 360 degree Reflectivity in front, back and side Nutcase logos Complies with CPSC standard for age 5 + up - Injection-molded ABS shell- Expanded Polystyrene (EPS) protective inner foam for high impact protection 2 front intake vents, 5 multiple top-mounted exhaust vents and 2 Rear exhaust vents