width is 42mm

¼ inch hex drive

while wheels make it easy to move into position

SilkShield or EXO sidewall protection

while the outer waterproof layer provides complete protection

Fox Proframe RS Helmet - L - Aura Sage Dangerous Goods width is 42mmThe Proframe RS Helmet takes the lightweight breathability of the Proframe and elevates it to the next level of safety and performance. Featuring the all new Mips Integra Split protection system, which combines a dual density foam for high and low speed impacts and a Low Friction Layer between the two layers designed to reduce rotational forces in a crash that would otherwise be transmitted to the brain. The BOA Fit System allows for a precise and