Availability: S/54 - 56cm, M/L 57 - 59cm, XL/XXL 60 - 62cm Colors: gray, black, blue, red, green The groundbreaking A2 MIPS is the Troy Lee Designs MTB Trail helmet that exceeds all requirements. The stylish outer shell not only features large intake and exhaust vents but also provides superior impact protection. With breakaway visor screws, the innovative MIPS system, and an industry-leading dual density EPP + EPS inner shell that protects against both high and low-speed impacts, the A2 is a helmet that takes your safety seriously. Add to that a revised adjustable strap and the X-Static Pure Silver comfort helmet padding, and the comfort is on par with the protection in every way.