Giro Helios Spherical Helmet - Matte Sapphire Size:M Should I choose Regular or

Should I choose Regular or Wide

This hubset rolls efficiently whether you’re pedaling or coasting

simulating accelerated weathering

POWER METER CONNECT

both allow 2 mm lateral float

Giro Helios Spherical Helmet - Matte Sapphire Size:M Should I choose Regular orThe 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