Unbelievable combination of performance, value for money, and style Acu-Dial fit system provides one handed micro adjustment whilst on the move and ensures a perfect custom fit for every rider Advancedstrap management keeps everything in place to allow further fine tuning for a safe and secure fit In-Mould hardbody adds strength and protection for no extra weight penalty 20 vents allow cold air in and hot air out to provide cooling and increase rider comfort Additional rear exhaust vents pull air through the helmet even when riding uphill and at slower speeds Snap-fit visor helps keep the sun and rain away from your face Universal shell size fits 54 - 61 cm head sizes Meets CE EN1078 certification