Giro ATMOS

With an ingenious structural design, incredible ventilation and a nearly weightless feel, the Aeon racing helmet is designed for serious competition. Structural support and long ventilation channels create more "air space" around your head for a cooler experience. Features Giro's new ultra-light, ultra-strong, Thermoformed SL Roll Cage -- a whopping 49% lighter than the sub frame used in the Ionos helmet. Add on the Roc Loc 5 fit system, MicroTech Tri-Locs, new Slimline webbing retainer, custom Slimline buckle and logo-printed pads for even further weight savings and an unbeatable fit.