Leatt, MTB Gravity 2.0 Men, Full Face Helmet, Stealth XS 53-54cm

• Downhill certified ASTM polymer shell in three sizes • 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% breakaway visor function for additional rotational impact force reduction • Impact foam for superior energy absorption • Premium washable inner liner for all-day comfort • Optimal neck brace compatibility • Certified and tested: AS/NZS 2063:2008, ASTM F1952–10, EN1078, CPSC 1203 • Weight: 960 ± 50g (2.12 lbs) • Sizing: XS (53-54cm – 20 ? - 21 ?"), S (55-56cm – 21 - 22"), M (57-58cm – 22 ½ - 22 ?"), L (59-60cm – 23 ? - 23"), XL (61-62cm – 24 – 24 ½"), XXL (63-64cm – 24 ? - 25")