The Troy Lee Designs helmets A1 and A2 have been celebrated for being the most comfortable, best-ventilated, and safest half-shell trail helmets on the market. After extensive development work, the A3 is now the top-level helmet, setting new standards in safety, styling, and comfort. It's a helmet you’ll want to wear 24/7. The three-piece helmet shell is extended in the rear for optimal protection during trail and enduro usage. The dual-density EPP + EPS helmet inner shell provides top-notch protection against high and low-speed impacts. MIPS® (Multi-Directional Impact Protection System) reduces rotational forces in certain oblique impacts. Sixteen ventilation openings are strategically placed to maximize airflow. The integrated perspiration management system and breathable, antimicrobial X-Static® helmet padding ensure the highest comfort levels. The patented Magnajust® visor with a three-position adjustment system allows you to quickly flip it up to place your goggles on the helmet when not in use. The package is rounded off with the Fidlock® magnetic buckle for convenient, one-handed opening and closing. Outer shell: 100% polypropylene. Inner shell: 65% expanded polystyrene (EPS). Liner: 95% polyester, 5% elastane. Exceeds certifications: CPSC 1203, CE EN 1078, AS / NZS 2063.