The groundbreaking A2 is the MTB trail helmet from Troy Lee Designs that meets all criteria. Its stylish shell features not only large intake and exhaust vents but also provides the best impact protection. From removable visor screws and the innovative MIPS system to an industry-first dual-density EPP + EPS liner that protects against both high and low-speed impacts; this is a helmet that takes your safety seriously. Add an adjustable strap and an X-Static Pure Silver Comfort Liner, and comfort is on par with protection.