Giro Aries Spherical Helmet - Matte Purple Haze Size:M Compatible with wheel / tire

Compatible with wheel / tire combinations having an overall height of 3

For Narrow 8-speed HG chains

Included 6° and 12° travel chips are installable to tune for more bike and terrain types

mountain biking or gravel grinding

Giro Aries Spherical Helmet - Matte Purple Haze Size:M Compatible with wheel / tireA 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