The AllMtn 1.0 helmet combines reliable Leatt protection with essential trail features at an accessible price point. Featuring 360° Turbine Technology to help minimize rotational forces and absorb energy from lower-speed impacts, along with in-molded impact foam for high-speed collision protection, it provides a dependable 3-in-1 safety system. The polymer shell offers extended coverage at the rear for enhanced protection, while 14 strategically placed vents maintain airflow during climbs and fast descents. An adjustable fit system delivers a customized, secure feel, and the Fidlock magnetic buckle allows for easy one-handed fastening. Perfect for new riders or anyone seeking solid performance without breaking the bank, the AllMtn 1.0 delivers where it counts. Features Polymer Compound shell in three sizes MaxiFlow impact foam air channels are effective even at low speeds 360° Turbine Technology Helps reduce peak brain acceleration at impact speeds associated with concussion Helps reduce peak brain rotational acceleration Extended rear coverage for added protection Adjustable visor with breakaway function for rotational impact force reduction In-molded impact foam for great energy absorption Maximized ventilation with 14 vents effective even at low speeds Moisture-wicking, breathable, and washable inner liner Certified and tested: AS/NZS 2063:2008, EN1078, CPSC 1203 Weight: from 320g (0,70 lbs) Sizing Small: 51–55 cm (20–21 5/8 in) Medium: 55–59 cm (21 5/8–23 ¼ in) Large: 59–63 cm (23 ¼–24 ¾ in)