Arai Tour X4 Cover helmet for adventure sports activities, grand tourism and off-road with maximum efficiency ventilation system. Ref. 1100216 1Arai Tour X4 Cover helmet for use with and without visor, with and without visor, combinable with each other and Double D closure for maximum safety. Ref. 1100216 1Arai's facial contouring FCS system guarantees comfort support to the jaw without feeling crushing effect, with lateral and superior padding.