Giro Helios Spherical MIPS Helmet - Matte Black Size:S Body : Alloy Steel

Body : Alloy Steel

Bottom Bracket Shell Width (mm): 86mm - 121mm

delivering top performance even on rough surfaces

Compatibility with 13-speed cassettes: all-encompassing

The TK-4 features specifically-designed slots and holders for hex wrenches

Giro Helios Spherical MIPS Helmet - Matte Black Size:S Body : Alloy SteelThe heart of the Helios's extraordinary design and performance is Spherical Technology, which utilizes a ball and socket design powered by Mips, the market leading brain protection system that can help to reduce rotational forces. Spherical Technology allows the helmet's outer liner to rotate around the inner liner during a crash, and also allows Progressive Layering of the inner and outer liners to provide more comprehensive protection and