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