Safe in every race: Lightweight yet solid racing bike helmet with durable EPS and PC shell combination - individual fit with the Zoom Ace adjustment system with a precise adjustment wheel. Good visibility on the bike: Due to bright reflectors the helmet can be seen from far away - available in many modern colours. Finely tuned ventilation system: Good ventilation with 7 air inlets and 16 air outlets - Forced Air Cooling Technology for a pleasant head climate. Technical details: Unisex helmet for adults, weight 220 g, colour orange, size M = head circumference 54-58 cm. Safe, reliable and stable. That is what the name ABUS stands for. Whether it is protection at home, object security or mobile security: ABUS sets the standards.