Description
29-30" 31-32" 33-34"
in a casual office environment
Mesh ventilation for breathability
helping you ride stronger for longer
Shimano Altus
S1 Lifer Helmet - Black Matte/Orange Straps Size:Medium (21.5") 29-30" 31-32" 33-34"The S1 Lifer Helmet is one of the best fitting and safest helmets on the market. All S1 Lifer Helmets are manufactured with specially formulated EPS Fusion Foam which allows it to protect your head from multiple low force impacts as well as high impacts. The Lifer Helmet is a dual certified helmet and is up to 5x more protective than the soft foam non certified helmets. Whether you're riding your bike down the street or rolling at a local skatepark