Bontrager Bike Helmet Fit System - Boa

Product details

1. Original equipment replacement Boa® System for your Bontrager helmet
2. Compatible with Boa-equipped Bontrager helmets, except Velocis MIPS and WaveCel
3. Can also be used to upgrade your Headmaster-equipped Bontrager helmet to the Boa System
4. Full length fit system designed for use with Medium and Large sized helmets
5. Short length fit system designed to optimize the fit of Small sized helmets