Optimally combines performance, comfort, and safety, suitable for racing and cross-country use thanks to the removable visor, minimizes air resistance due to maximum ventilation, exclusive Autofit system guarantees easy helmet strap adjustment, Live Fit technology, optimal adjustability, high support and wearing comfort, 255 g. MIPS technology reduces damage to the brain in the event of an oblique head impact. Item Properties Aero, MIPS Color designation grey silver metal Main color grey Head circumference 51 cm, 52 cm, 53 cm, 54 cm, 55 cm, 56 cm Head circumference up to 56 cm Head circumference from 51 cm Closure system buckle Adjustment system rotary knob Visor detachable