Giro Helios Spherical Helmet - Matte Sapphire Size:M The PW-3 features two precision-cut

The PW-3 features two precision-cut wrench openings for compatibility with virtually all bicycle pedals that feature wrench flats

Our development team used their years of accumulated knowledge and the lessons we’ve learned to understand and interpret the results

cadence and pedalling efficiency

99% after 24 hours

Giro Helios Spherical Helmet - Matte Sapphire Size:M The PW-3 features two precision-cutThe 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