Giro Aries Spherical Helmet - Matte Purple Haze Size:M It is still very comfortable

It is still very comfortable to hold and allows high deceleration values with little effort

They're made to perform

Quicker Engagement/less drag

The CO2 unit is our Boundary CO2 delivery system which offers a fast and efficient method to reinflate your tire in an emergency

12% spandex / Palm: 100% polyester

Giro Aries Spherical Helmet - Matte Purple Haze Size:M It is still very comfortableA helmet that feels like it isn't there: the all new Aries Spherical is like nothing before. Its sleeker form and lighter weight (only 270 grams in size medium, CE certification), deliver sensational comfort and cooling power. Spherical Technology, our ball and socket design powered by Mips, adds protection by redirecting energy away from the brain in certain impacts, and Progressive Layering with dual densities of Nanobead EPS foam adds more