Composite shell in three sizes Passed Motorcycle impact Standard Incredible comfort due to Pro-FitTM modulating comfort liner Impact absorbing foam in 4 densities for ultimate reduction of forces to head and brain 360° Turbine Technology Reduced peak brain acceleration by up to 30% at impact speeds associated with concussion Reduces peak brain rotational acceleration by up to 40% Moisture wicking, breathable, anti-odor and washable liner fabric Optimal neck brace compatibility Maximized ventilation effective even at very low speeds Visor with breakaway function for rotational reduction in a crash Includes Visor extension Emergency cheek pad removal Hydration ready (with optional hands-free kit) Certified and tested: ASTM F1952–10, EN1078, CPSC 1203, AS/NZS 2063:2008. Passes Motorcycle ECE 22.05 Weight: From 1.120 ± 50g (2.47lbs) Plastic Free Recyclable Packaging Sizing: S (55-56cm – 21 ?†- 22''), M (57-58cm – 22 ½†- 22 ¾â€), L (59-60cm – 23¾†- 23