The very latest in cycling head protection.WaveCel advanced helmet technologyThe Boa® System lets you easily secure and adjust helmet fit with just one handFidlock magnetic buckle fastens effortlessly for a quick, secure fitThe front Blendr mount system easily integrates GoPro camera and Bontrager light accessoriesAgION antimicrobial pads wick away moisture and eliminate odours naturallyAdditional NoSweat pad with silicone channel keeps sweat out of eyes for constant clarityDrop-in coverage on back of helmet offers extended protectionThe Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownershipWhat is WaveCel:WaveCel is a collapsible cellular material that lines the inside of Bontrager helmets. It is the result of a four-year partnership between Treks Research & Design teams, orthopedic surgeon Dr. Steve Madey, and biomechanical engineer Dr. Michael Bottlang. Drs Madey and Bottlang have collaborated for the past 25 years and pioneered advances in fracture care, thoracic and pelvic trauma, and head injury prevention. They are funded by grants from the National Institute of Health to help prevent traumatic brain injuries amongst cyclists.How it works:Unlike a standard foam helmet, which is designed to protect against direct impacts, WaveCel accounts for how most cycling accidents actually happenungracefully, with twists, turns, and angled impacts.WaveCel absorbs energy in multiple ways. On impact, the layers of the WaveCel material move independently and flex until the cell walls crumple and then glide, actively absorbing direct and rotational energy and redirecting it away from your head. This three-step change in material structureflex, crumple, glideis remarkably effective at dispersing the energy from an impact. Nearly 99 out of 100 times, WaveCel prevents concussions from common cycling accidents.**Results based on AIS 2 Injury (BriC) at 6.2 m/s test at 45° comparing a standard EPS Helmet and the same helmet modified with WaveCel insert as described in detail in Comparison of Bicycle Helmet Technologies in Realistic Oblique Impacts. For more information visit trekbikes.com/WaveCel