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H4 Coiler BOA Fit System
Main compartment fits helmet
Generous Fit: Style cut a bit wider at the calf for extra leg room
and advanced traction outsole to carry you through the cold in comfort
Battery life: The internal
Mainline MIPS 11Bike-Shorts11 H4 Coiler BOA Fit SystemThe pinnacle helmet in Smith's mountain bike collection is the all new, DH certified, Mainline. Featuring complete Koroyd coverage and the MIPS rotational system, the Mainline provides exceptional protection while combining internal air channels and open exhaust ports to maximize breathability. As goggle fit and ventilation are crucial for grueling days, the AirEvac system relieves hot air that builds up on your goggles, to prevent fogging. Included
