Your mountain bike helmet should keep you safe and help you stay locked in. From technical lines to tacky singletrack, the Flow mountain bike helmet keeps you in the moment, moving in sync, comfortable and protected. Built with features from the forefront of bike helmet technology, like full-back coverage, micro-fit adjustment, a cooling ventilation system, and indexing visor. The Flow is the best mountain bike helmet for all-mountain riding - short or long, technical or not. It's a seamless extension of your mountain bike riding experience.