The A1 and A2 helmets by Troy Lee Designs were celebrated as the most comfortable, ventilated, and safest half-shell trail helmets on the market. After extensive development, the A3 now stands as the top-level helmet, setting new standards in safety, styling, and comfort. It's a helmet you'll want to wear 24/7. The 3-piece helmet shell extends in the back for optimal protection during trail and enduro rides. With Dual Density EPP + EPS inner shell, it offers top-notch protection against high and low-speed impacts. The MIPS® (Multi-Directional Impact Protection System) reduces rotational forces during angled impacts. The helmet features 16 ventilation openings, perfectly positioned for maximum airflow. The integrated transpiration management system and breathable, antimicrobial X-Static® helmet padding ensure supreme 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 in use. Completing the package is the Fidlock® magnetic closure for easy one-handed opening and closing. Outer Shell: 100% Polypropylene. Inner Shell: 65% expanded polystyrene (EPS). Lining: 95% Polyester, 5% Elastane. Exceeds Certifications: CPSC 1203, CE EN 1078, AS / NZS 2063.