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Available in up to four sizes for a tailored fit, Quantum features great ventilation, excellent coverage, and of course Bontrager's signature out-of-the-box comfort and incredible ease-of-use. A removable visor adds to the value of a helmet that feels just as at home on the trail as it does on the road.
Features
- Great ventilation, even at low speeds
- Excellent coverage
- One-hand adjustable Micro-Manager fit system
- Easy-to-use Lockdown side strap adjusters
- Lightweight and comfortable
- Removable snap-on visor
- In-molded shell with internal reinforcements
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Pro Sizing
Measure the circumference of your head using a cloth tape measure or a piece of string and a ruler. Use the chart below to find the proper helmet size based on your measurement.
cm 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 Small Medium Large X-Large 1 Head
Take your measurement horizontally across your brow and over your ears.