The Troy Lee Designs A2 MIPS® MTB-Trail Helmet will more than meet your expectations in terms of safety, comfort, and ventilation. Compared to the TLD A1 helmet, the Dual-Density EPP + EPS inner shell has been reinforced by 16% to provide improved protection against both low and high-speed impacts in common crash zones. The MIPS® safety system also reduces rotational forces exerted on the head in the event of an angled impact. In case of an impact, the visor screws break away to minimize the risk of snagging or hanging up. Massive intake and exhaust ports offer maximum cooling with over 25% higher airflow compared to the A1 model. The low-profile, semi-adjustable strap dividers and X-Static® Pure Silver comfort helmet liner deliver a perfect fit and superior comfort for bikers, regardless of head shape. Outer Shell: 100% Polycarbonate. Inner Shell: 65% Expanded Polystyrene (EPS), 35% Expanded Polypropylene (EPP). Lining: 95% Polyester, 5% Elastane. Exceeds certifications: CPSC 1203, CE EN 1078, AS / NZS 2063.