NEVER COMPROMISE/ Race the wind or chase after storms - the StormChaser ACE is a lightweight road helmet for all fast rides. This road bike helmet has been tried and tested by cycling professionals in road races and cyclocross - and has now received an impressive update: the revamped lower edge protection goes all the way around the helmet and its new visual quality underlines the premium standards of this particularly lightweight bike helmet. The lower edge also protects the shock-absorbing inner material. Its design remains streamlined and angular. Precisely shaped air inlets and outlets also ensure optimum ventilation of the head. The new precisely-adaptable and height-adjustable Zoom Pro adjustment system allows the helmet to be customised for the best possible fit and maximum comfort. Revised anchor points for the webbing straps prevent disturbing noises such as slight rattling even during fast rides - chase the storms with the StormChaser ACE! Specification In-mould design for... Lightweight: the StormChaser ACE is a Lightweight Road Bike Helmet - 200 grams (Helmet Size S), 220 grams (Helmet Size M) and 240 grams (Helmet Size L) Choice of three Sizes: S 51-55 cm, M 54-58 cm and L 57-61 cm - the measureMents in centimetres refer to the head circumference ACE version: with full circumferential lower edge protection for high-quality aesthetics and to protect the Shock-absorbing EPS Helmet material Safe: thanks to the stable and durable combination of the Shock-absorbing EPS inner material and the polycarbonate outer shell Who it's for: Unisex Racing Bike Helmet for Adults and young people - for Professional and ambitious Racing cyclists