The Troy Lee Designs A2 MIPS® MTB-Trail Helmet will exceed your expectations in terms of safety, comfort, and ventilation. Compared to the TLD A1 Helmet, the dual-density EPP + EPS helmet liner has been reinforced by 16% to provide enhanced protection against low and high-speed impacts in typical impact zones. The MIPS® safety system also reduces rotational forces on the head in the event of an angled impact. In the event of a collision, the visor screws break, minimizing the risk of snagging or catching. Massive intake and exhaust vents ensure maximum cooling with over 25% higher airflow compared to the A1 model. The flat, semi-adjustable strap dividers and the X-Static® Pure Silver comfort helmet padding offer the rider a perfect fit and supreme comfort regardless of head shape. Outer Shell: 100% Polycarbonate. Inner Liner: 65% Expanded Polystyrene (EPS), 35% Expanded Polypropylene (EPP). Lining: 95% Polyester, 5% Elastane. Exceeds Certifications: CPSC 1203, CE EN 1078, AS / NZS 2063.