Leatt MTB All Mtn 1. 0 V24 Helmet Ride anywhere The Leatt MTB All Mtn 1. 0 Helmet provides deep coverage for more technical terrain, without weighing you down. The All Mtn 1. 0 is the entry point into Leatt's all-mountain helmet lineup, with much of the technology found in its more advanced siblings. Overall safety is enhanced by Leatt's 360deg Turbine Technology, which consists of energy-absorbing discs and reduces concussive forces by up to 30%, and rotational forces by up to 40%. With 14 vents and Maxiflow air channeling, the All Mtn 1. 0 provides generous airflow for hot conditions, with a moisture-wicking inner liner to keep you comfortable. The All Mtn 1. 0 equals serious protection. Features Polymer Compound shell covers the in-molded impact foam core Leatt's 360deg Turbine Technology reduces forces from both rotational and linear impacts14 vents with Maxi Flow channeling for impressive cooling airflow at any speed Moisture-wicking liner keeps you dry in hot conditions Adjustable breakaway visor for adjustable coverage without sacrificing safety Specifications Core Material In-molded impact foam Safety Certifications AS/NZS 2063:2008, EN1078, CPSC 1203Intended Use All Mountain, Trail Weight320 grams Sizing Size Small Medium Large Head circumference (cm)51 - 55cm55 - 59cm59 - 63cm | Leatt | Helmet Mtb Allmtn 1. 0 V24 Men's | Size Extra Small In Red