Structure: Rectangular Sidewall

180 kg/ half pair

Sized for a comfortable fit on small to medium faces

980 kg/half pair

while its technical features will help keep you riding hard on those long summer days

Bontrager Quantum MIPS Helmet technical Structure: Rectangular SidewallPerformance and comfort for every rider Quantum helmets feature superior ventilation, excellent coverage, and Bontrager's signature out of the box comfort. A removable visor feature adds incredible ease of use by allowing Quantum to be your go to helmet no matter what the type of ride. SPECS Construction In molded composite skeleton Fit System BOA System Impact System MIPS Brain Protection System Ventilation Recessed internal channels Closure Standard