A major advancement in the protection against cycling-related head injuries
Rally WaveCel is a high-style, high-value off-road helmet with trail-specific features and WaveCel, a leading technology in the protection against cycling-related head injuries.
WaveCel is a collapsible cellular structure that lines the inside of the helmet. This Bontrager-exclusive technology disrupts the safety standards that the industry has accepted for over 30 years.
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What is WaveCel?
WaveCel is a collapsible cellular structure that lines the inside of your helmet. It works like a crumple zone that absorbs the force of an impact before it reaches your head. Read the study to learn more. You¡¯ll never want to ride anything else again.
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BOA Fit System
Easily secure and adjust the helmet fit with just one hand.
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Drop-in Coverage
The extended, back-of-helmet shell offers additional rear protection.
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LockDown Strap Dividers
Easily adjust straps to fit perfectly with adjustable, lightweight strap naviders.
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Soft Helmet Pads
Super-comfortable internal pads wick moisture on hot days and hard efforts and are easy to wash after a full day of fun.
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A TIME Magazine Invention of the Year
Bontrager's breakthrough WaveCel helmet technology was named to TIME Magazine's list of 100 Best Inventions making the world better, smarter and even a bit more fun.
From TIME 2020 TIME USA LLC. All rights reserved. Used under licence
Product details
- WaveCel advanced helmet technology
- Virginia Tech 5-STAR rating
- BOA Fit System lets you easily secure and adjust your helmet fit with one hand
- Adjustable visor offers multiple coverage options
- LockDown naviders make helmet strap management clean and easy to adjust
- Soft, comfortable and moisture-wicking washable helmet pads
- The Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownership
- Complies with US CPSC safety standards for bicycle helmets for persons age 5 and over.




