If your favourite trails always end in daring descents and paths that don’t appear on any map… the Dolmen helmet is for you.In the mountains, you need a trusted partner. And the Dolmen has (almost) everything you’d expect from a good enduro helmet. It especially protects the key areas. It’s as sturdy as a megalithic structure. And it’s ventilated and comfortable so you decide when the adventure ends. So adjust the visor to your favourite position and have fun. It’s only flaw is that at the end of the day, it can't have a pint with you.CharacteristicsMountain cycling helmet with adjustable visorPerfect for the wildest routes and settingsIts geometry provides better protection for the forehead and eye regionThe internal Airflow architecture promotes air flow to keep you cool3-position adjustable visor and HB-96 rear fastening system with adjustable wheelTechnologiesInternal helmet design comprised of channels that connect the front and rear openings. The large frontal openings enable large volumes of air to enter. Thanks to the continuity of its internal tunnels, effective air circulation is achieved. Whereby air in contact with the head is constantly renewed, thus transferring excess heat to the rear openings. This provides excellent cooling and superior aerodynamic performance compared to conventional internal structures.This product has earned EC certification, meeting the technical and quality criteria set out in the corresponding approvalSize Guide for HelmetsEach helmet specifies the appropriate measurements for each size in centimeters.size XS-S: 51 -55 cmsize S-M: 55-59 cmsize M-L: 59-63 cmTo establish the ideal size, measure your head's circumference, as indicated in the image.