Through the use of In-Mould construction, the D-Slope is very lightweight and features a clean design that can be adapted to the needs of all youths, even the most demanding. The upper air intake provides ventilation and the rotor on the back allows for the size to be adjusted. The helmet comes complete with a visor strap on the back. Features Rotor size micro adjustment 6 air vents Active ventilation Goggles fastening system ITW Buckle Protection In-Mould Outer shell Polystyrene inner shell Homologation ASTM F-2040 EN 1077 type B