The Troy Lee Designs helmets A1 and A2 have been praised for being the most comfortable, best-ventilated, and safest half-shell trail helmets on the market. After long and intensive development work, the A3 is now the top-level helmet, setting new standards in safety, style, and comfort. A helmet you’ll want to wear 24/7. The 3-part helmet shell extends in the back of the head area, providing optimal protection for trail and enduro use. The Dual Density EPP + EPS helmet inner shell offers excellent protection against high and low-speed impacts. MIPS® (Multi-Directional Impact Protection System) reduces rotational forces in the event of certain angled impacts. 16 optimized ventilation openings ensure maximum airflow, perfectly aligned with the helmet's channeling. The integrated sweat management system and breathable, antimicrobial X-Static® helmet padding ensure the highest level of comfort. The patented Magnajust® visor with a 3-position adjustment system allows you to quickly flip it up to place your goggles on the helmet when not needed. Completing the package is the Fidlock® magnetic closure for convenient, one-handed opening and closing. Outer shell: 100% Polypropylene. Inner shell: 65% expanded polystyrene (EPS). Lining: 95% Polyester, 5% Spandex. Exceeds certifications: CPSC 1203, CE EN 1078, AS / NZS 2063