An additional 16% more frontal EPP + EPS increases coverage in common impact zones 25% more airflow over the A1 for maximum cooling power using huge intake and exhaust ports Innovative break-away visor screws help reduce the likelihood snagging during a crash Low-profile, semi-adjustable strap dividers deliver the perfect fit regardless of head shape 350 Grams( Size M/L ) The trailblazing A2 is Troy Lee Designs'MTB trail helmet that checks all the boxes. Its stylish shell not only incorporates huge intake and exhaust ventilation ports, but it also comes with great coverage. From breakaway visor screws and the innovative MIPS system and an industry-first dual-density EPP + EPS liner that covers against both high and low-speed impacts; this is a helmet that doesn't take coverage lightly. Add in an adjustable strap and X-Static Pure Silver comfort liner and the comfort is every bit on par with the coverage.