Adults

An all-around, road racing helmet that is light, cool, fast, and features the added protection of Mips. Light is fast. Fast is cool. Velocis Mips is now lighter, cooler, and faster than ever thanks to insight and feedback from Trek-Segafredo. And with a full suite of pro-level features, this helmet is bound for the podium. Velocis is designed with protection front and center. This helmet earned a Virginia Tech 5-STAR safety rating and features a Mips Air safety system. Product details: - Trek's lightest road helmet is now even lighter, saving grams and providing more comfort - Improved ventilation and channeling keeps you cooler and moves you faster - The Mips Air system is light, cool, and designed to improve comfort and protection - The single-lace BOA® fit system is fully adjustable to provide a custom, 360° fit - Rubberized sunglasses docking port provides secure and easy-to-use storage - Beveled front edge improves field of view while riding in the drops and on the hoods - 5-STAR Virginia Tech safety rating - Complies with U.S. CPSC safety standards for bicycle helmets for persons age 1 and over Trek Velocis Mips – Light, fast, cool Designed to meet the everyday demands of Trek-Segafredo, Velocis is a versatile helmet that excels anywhere you ride. It’s lighter, cooler, and faster than ever before and, with added tech like the Mips Air safety system, a customizable BOA® fit system, and secure sunglasses storage, you’ll be ready for an epic day in the mountains or chasing local KOMs.

A stylish road helmet with advanced WaveCel technology that balances comfort and performance for all riders who value safety. A MAJOR ADVANCEMENT IN THE PROTECTION AGAINST CYCLING-RELATED HEAD INJURIES Starvos WaveCel is a versatile, high-value cycling helmet for new-to-seasoned riders who want 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 Trek-exclusive technology disrupts the safety standards the industry has accepted for over 30 years. PRODUCT DETAILS - WaveCel advanced helmet technology - Intuitive, one-handed Headmaster fit system makes adjustments easy - LockDown dividers make helmet strap management clean and easy to adjust - Soft, comfortable, and moisture-wicking washable helmet pads - Available in XS and XL sizing - Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownership - Complies with U.S. CPSC safety standards for bicycle helmets for persons age 1 and over

A stylish road helmet with advanced WaveCel technology that balances comfort and performance for all riders who value safety. A major advancement in the protection against cycling-related head injuries Starvos WaveCel is a versatile, high-value cycling helmet for new-to-seasoned riders who want the added protection of 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 the industry has accepted for over 30 years. Product details - WaveCel advanced helmet technology - Virginia Tech 5 STAR rating - Intuitive, one-handed Headmaster fit system makes height and circumference adjustments easy - LockDown dividers make helmet strap management clean and easy to adjust - Soft, comfortable, moisture-wicking, and washable helmet pads - Available in XL sizing - Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownership Specifications - Size (head circumference): Small (51-57cm) / Medium (54-60cm) / Large (58-63cm) / X-Large (60-66cm) - Fit system: Headmaster II - Pad material: Moisture-wicking pads - Buckle type: Standard buckle - Includes: Crash Replacement Guarantee - Weight: 300g (Small) / 335g (Medium) / 370g (Large) / 385g (X-Large)

Premium features, certified protection, and sleek styling make the Chamonix a tremendous value for any cyclist. You'll also find that it's equipped with next-level protection courtesy of revolutionary MIPS technology (Multi-Directional Impact Protection System). - One-size system, designed for an easy and accurate fit to a wide range of head sizes - Headset SX fit system with micro-adjustable dial for an easy, secure, and accurate fit - 4th Dimension Cooling System optimizes ventilation - In-molded shell improves strength and reduces weight - Tri-Fix web splitter for improved comfort and ease of strap adjustments - Reflective webbing and decals for increased visibility to motorists in low-light conditions - Patented clip-on visor included - MIPS-equipped - Fit system is ANGi crash sensor ready

Bontrager XXX WaveCel delivers high-performance protection and the best in aerodynamics and comfort. XXX is the WaveCel helmet of choice for the Trek-Segafredo men's and women's teams. WaveCel is a collapsible cellular structure that lines the inside of the helmet. This Bontrager-exclusive technology disrupts the safety standards the industry has accepted for over 30 years. - WaveCel advanced helmet technology - The Boa System lets you easily secure and adjust helmet fit with just one hand - Easy-to-use adjustable strap dividers allow for a fine tune fit - An aerodynamic shape helps you outsmart the wind and ride faster - AgION antimicrobial pads wick away moisture and eliminate odors naturally - Additional NoSweat pad with silicone channel keeps sweat out of eyes for constant clarity - Team Trek-Segafredo sticker kit included with Viper Red, White, and Visibility Yellow colorways - Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownership Sizing: - Small: 51-57cm - Medium: 54-60cm - Large: 58-63cm

Electra has always brought you the styles and functional designs you love in the world of cruisers. Now, with their Graphic Helmet, they keep you looking stylish while keeping your dome safe. This bold lid offers a broad variety of graphic choices so you can express yourself with gusto. - Durable ABS hardshell and EPS foam liner maximize comfort and protection - Fit retention system with reflective bubble decal - Secure magnetic Fidlock buckle - Heat sealed and washable padding liner for added comfort - Reflective straps - CPSC Adult Certified Size: - Small: 48-54cm - Medium: 55-58cm - Large: 59-61cm

The trails are calling. An off-road, all-purpose helmet, with sixteen air-vents for comfort and a lightweight design, perfect for every trail and adventure. Where it thrives: Challenging trails, up and down hills What it's built for: Comfort, durability Highlights: - Extra rear coverage reflective logos - 16 air vents / one-piece visor - One-handed adjustment for easy fitting

Electra has always brought you the styles and functional designs you love in the world of cruisers. Now, with their Solid Color Helmet, they keep you looking stylish while keeping your dome safe. This understated, savvy lid offers a variety of sweet color choices to meet your style needs. - Durable ABS hardshell and EPS foam liner max comfort and protection - Fit retention system with reflective bubble decal - Solid color to match any bike. Well, at least your favorite bike. - Secure magnetic Fidlock buckle - Heat sealed and washable padding liner for added comfort - Reflective straps - CPSC Adult Certified Size: - Small: 48-54cm - Medium: 55-58cm - Large: 59-61cm

With a sleek and fast look, the Echelon helmet presents a compact profile on a rider's head. And with increased ventilation and an ergonomic design, you're guaranteed an exceptional fit, tremendous comfort, and ample ventilation. Accordingly, it's the ideal helmet for road cycling enthusiasts. - Easy-adjust Headset SL II fit system with six height positions and micro-adjustable dial - 4th Dimension Cooling System optimizes ventilation - Composite matrix internal reinforcement allows larger vents for greater cooling - Tri-Fix web splitter for improved comfort and ease of strap adjustments - Reflective decals for increased visibility to motorists in low-light conditions - MIPS-equipped - Fit system is ANGi crash sensor ready

If you're going to wear a helmet on your Electra, wear an Electra on your helmet. - Durable ABS hardshell for protection and EPS foam liner for security - Detachable visor for when you want sun protection, velcro for when you don't - Fit retention system provides secure and snug fit - Easy to use magnetic Fidlock buckle - Size SMALL fits circumference 48cm - 54cm and hat sizes 6 1/2 - 6 3/4 - Size MEDIUM fits circumference 55cm - 58cm and hat sizes 6 7/8 - 7 1/4 - Size LARGE fits circumference 59cm - 61cm and hat sizes 7 3/8 - 7 5/8 - Small size generally fits children while medium and large sizes fit adults

The Chakra Solo builds on Kali's best-selling Chakra line of helmets. Featuring Composite Fusion technology, a lower polycarbonate wrap and an integrated bug liner for those fast turns just earned. - Anti-microbial pads - Breakaway visor - PC shell and with EPS foam - Dial-Fit closure - 21 vents for maximum airflow - Simple graphics, and gloss finish

When ripping down the trail, the last thing you need to worry about is if your helmet will protect you in a crash. Then again, you don't want to be stuck wearing a full-face on every trail ride. This is why we created the Ambush, the lightest and most ventilated extended coverage helmet available. We've teamed up with MIPS researchers to introduce MIPS SL—a new, ultra-light, and supremely comfortable version of MIPS that's available exclusively on Specialized helmets. With MIPS SL, we've essentially integrated MIPS technology within the helmet padding itself. MIPS SL's minimalist "watchband" attachment system provides 10 to 15 millimeters of rotation in every direction and offers the same brain protection benefits as other versions of MIPS, while also ushering in a new level of comfort and weight savings. Starting with protection, the Ambush boasts a significant amount of extended coverage, Energy Optimized Multi-Density EPS foam that manages the energy from impacts effectively, and a Aramid-Reinforced Skeleton that provides extra structure for the foam. Even with the added protection, though, it fits comfortably with our low profile and fully integrated Mindset 360 fit system. With its five height positions, this system provides unmatched adjustment, while an integrated dial allows for on-the-fly tinkering. The Ambush also keeps you cool with our 4th Dimension Cooling System's massive vents and exhaust ports, so you don't have to worry about overheating—even on the hottest days. Finally, we included a micro-indexing visor that quickly adjusts positions and has plenty of room for goggle storage. Combined, these features put the Ambush well in front of the competition. Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older. - New MIPS SL is the lightest, most ventilated MIPS protection to date and is exclusively available on Specialized helmets. - Patented aramid-reinforced skeleton provides internal EPS support. - Patented Energy Optimized Multi-Density EPS construction helps to manage impact energy. - Mindset 360 fit system provides a secure, customizable fit with 360-degree tension adjustment, five height positions, and an integrated dial for easy, on-the-fly adjustments. - Micro indexing visor allows for a wide range of fast, secure on-trail adjustments, as well as convenient goggle stowage. - 4th Dimension Cooling System with massive vents, internal Cross-Channels, and aligned exhaust ports increases airflow to keep you cool. - Low profile in-molded shell with smooth, snag-free exterior shape. - Extended coverage for added protection and durability. - This helmet is ANGi ready, with a fit system mount designed for easy integration with our ANGi crash sensor. - Our available aftermarket ANGi sensor gives you and your loved ones peace of mind like never before. When combined with our Specialized Ride app, the ANGi sensor will evaluate the forces acting on the helmet in the event of an accident and, if necessary, send a text message to your specified contacts with your location. - Lightweight, quick-drying liner features a Gutter Action Brow that channels moisture away from eyes. - Tri-Fix web splitter for improved comfort and ease of strap adjustments.

Loosely based upon the leather "hairnets" that cyclists used to wear before protection was a priority, we took their ventilation and classic style and incorporated them into a modern helmet design that combines aerodynamics, weight, aesthetics, and ventilation—the Airnet with MIPS. - Ultra-light Mindset micro-dial fit system with height adjustability for the perfect fit. - 4th Dimension Cooling System with deep internal channels, large vents, and aligned exhaust ports. - Composite matrix internal reinforcement allows larger vents for enhanced cooling. - drirelease Merino wool pads for increased comfort and sweat/ temperature management. - Vent grippers integrated at the front and rear for secure eyewear storage. - Thin, soft, and lightweight 4X DryLite webbing won’t stretch out with sweat or water. - Tri-Fix web splitter for improved comfort and ease of strap adjustments. - Instrap webbing system for ultra-light construction and security. - Reflective decals for increased visibility in low-light conditions. - MIPS-equipped.

A Helmet Made For The City Streets The Pedelec 2.0 is an uncompromising combination of protection and comfort. Complemented by clever features, it is the ideal companion and an indispensable companion for you as a cyclist riding in city traffic. Accidents happen quickly and if you fall, a bicycle helmet helps protect you against serious injury. The Pedelec 2.0 meets the high safety requirements of the big city, with a deep temple area that provides the required additional protection to give you confidence on your commute. The Pedelec 2.0 also features an integrated rain hood, which can be quickly pulled over the helmet at the first sign of rain, and the especially bright, rechargeable light and the replaceable visor offer additional, passive protection. Technology: - This NTA 8776 helmet complies with the requirements in the Dutch Technical Agreement (NTA) 8776. - In-Mold for a durable connection with the outer shell with shock-absorbing helmet material (EPS) - High visibility thanks to powerful reflectors - Large, integrated, high mount LED tail light with 180° visibility - Forced Air Cooling Technology: Sophisticated ventilation system for an optimal head climate - Excellent ventilation with 4 air inlets and 9 air outlets connected with flow channels - Ponytail compatibility - Zoom Ace Urban: Finely adjustable adjustment system with handy adjustment wheel for customizable fit - Size adjustment by means of a half ring made from particularly hard-wearing and slightly malleable plastic for optimal stability and fit - Foamed-in fly nets - Lower edge protection: Provides the helmet with additional protection from external influences - Fidlock magnetic strap buckle - Rain cover integrated in the helmet Sizing - Medium: 52-57 cm - Large: 56-62 cm

- Open face all mountain design - 19 vents - ConeHead Technology utilizing dual density foams in impact absorbing zones - Full rear coverage - Boa one hand dial fit adjustment - Adjustable visor - Rapid adjust chin strap - Certified : CPSC Bike Sizing: - X-Small/Small = 52 – 55cm - Medium/Large = 56 – 59cm - X-Large/XX-Large: 60 – 63cm

The Cormick MIPS offers a comfortable fit with deep coverage and open ventilation in a design that is suitable for nearly any ride. It’s built using In-Mold construction to reduce weight while enhancing durability to stand up to everyday use. The ease and comfort of Giro's acclaimed Roc Loc Sport MIPS fit system makes fitting as easy as turning a dial, and the fit system is seamlessly integrated with the Multi-Directional Impact Protection System (MIPS), which can redirect energy and provide more protection in certain impacts. When you put it all together, you get the versatility you need to ride everything from forested fire-roads to swooping singletrack trails to the city streets.

The Register™ Mips® II brings the style of Giro's highest-end road helmets into this lightweight in-mold helmet, adding a removable visor, an adjustable fit system, and the Mips® Evolve Core rotational energy management system, to create a best-in-class recreation helmet.

The Register MIPS helmet combines sleek design and lightweight construction to match your style, on the road or trail. Made in a comfortable Universal Fit size with Giro's convenient Roc Loc Sport fit system, the Register MIPS adjusts with a simple turn of the dial so you can tune the fit in seconds. A range of colors lets you choose exactly how your on-bike style comes together. Register MIPS models also have an integrated Multi-Directional Impact Protection System, which can redirect energy and provide more protection in certain impacts.

Anywhere, any day. A true go-anywhere helmet with a low-profile lightweight design, extra rear coverage, and a mini visor for a relaxed, modern look for all rides. Where it thrives: Gravel roads, the open road, up and down hills What it's built for: Comfort, durability Highlights: - MIPS equipped and extra rear coverage for increased protection - 23 air vents / one-piece visor - One-handed adjustment for easy fitting

Riding is for everyone, so we created the Camber to provide a dialed fit for rippers of all sizes, from kids on up. The Camber comes equipped with all the comfort, style, and ventilation to make every ride a joyride. Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older. - Camber earned the highest 5-Star Virginia Tech Helmet Rating from internationally renowned Virginia Polytechnic Institute and State University. - The MIPS system is a low-friction layer that allows a sliding motion of 10 to 15mm in all directions. Studies indicate that this reduces some of the rotational forces transmitted to the brain during angled impacts. - With x-small to x-large options spread across five unique shell sizes, the Camber eliminates excess bulk to deliver a comfortable and streamlined fit to a full range of riders. - Easily-adjustable, one-size Headset SX fit system with adjustable Tri-Fix web splitters delivers an easy and accurate fit. - 4th Dimension Cooling System optimizes ventilation. - In-molded shell improves strength and reduces weight. - This helmet is ANGi ready, with a fit system mount designed for easy integration with our ANGi crash sensor. - Average weight: 370 grams (medium).

For trail or town Built for riders who live active lifestyles and want to stay protected, the Quantum cycling helmet looks just as good as it fits. Featuring MIPS, Multi-directional Impact Protection System, superior ventilation, and excellent coverage. Get it all and even more with a removable visor allowing Quantum to be your go-to helmet no matter what type of riding. MIPS (Multi-directional Impact Protection System) was developed by brain surgeons and scientist to help reduce rotational forces on the brain caused by angled impacts to the head. Key features - MIPS Brain Protection System - The Boa System lets riders easily secure and adjust helmet fit with one hand - In-mold composite skeleton increases helmet integrity for larger vent variations - Soft, comfortable, moisture-wicking, and washable helmet pads - Internal, recessed channels move airflow over your head to stay cool and dry - Removable snap-on visor and port covers provide multiple looks to fit your style - LockDown dividers make helmet strap management clean and are easy to adjust - Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownership

Giro's Aerohead MIPS takes the same wind-cheating silhouette as the leading-edge Aerohead Ultimate, but adds increased ventilation to keep triathletes and time trialists cool when the competition is hot. By using a polycarbonate shell, Wind Tunnel ventilation, and internal channeling, this helmet is proven to boost cooling power while remaining aerodynamic. Additionally, Aerohead MIPS features a wrap-around eye shield that offers an impressive field of view with the convenience of a magnetic anchor attachment to allow easy storage of the lens in the "flipped up" position—perfect for fast swim-to-bike transitions.

As bikes become more capable and trail riding gets faster the M2 slots into the current generation of open face protection. Conehead technology utilises dual-density foam to dissipate impacts more effectively giving you a safer ride. The Boa Fit System delivers a connected, fast, customized and durable fit, purpose-built for performance. - 19 vents provide cool air intake and heat exhaust - Conehead technology - Full rear head coverage - Custom 7iDP liner for superior fit and comfort - BOA one hand dial fit adjustment - Rapid adjust chin strap - Tested beyond CE, CPSC, AS standards The M2's foam liner is made of two density layers. The outer layer, which is the black part, is made of high-density foam and has cones facing inwards. The inner layer, the grey part which is close to the head, is made of softer low-density foam and has cones facing outwards.

ALLL-ROUND HELMET The Macator is a sporty entry-level helmet for cyclists looking for an outstanding all-round helmet. The Macator has not only a comfortable padding but also offers an excellent ventilation, and it comes in a variety of bright, highly-visible colors. In-Mold: Lightweight, durable helmet with a long-lasting combination of EPS core and Polycarbonate shell - Bug mesh: Full protection from insects - Ponytail compatibility: Perfect fit for people with long hair - Full-ring: Adjustable ring connected to adjustment system enclosing all of the head - Excellent ventilation with 5 air inlets and 8 air outlets - Zoom Ace: Finely adjustable adjustment system with handy adjustment wheel for customizable fit

The Lazer Coyote offers excellent ventilation and a solid fit so you can focus on what really matters: the trail. The Coyote offers a MIPS layer with deep protection and goggle compatibility to help protect your head whether you’re riding tech or flow. With twenty-one vents, this mountain bike helmet is designed to keep air flowing when you’re working your hardest. The generous open front perfectly fits your goggles and the molded shell keeps your strap in place. The integrated visor offers an extra layer of protection to keep things - like the sun and branches - out of your eyes. The TS+ fit system will keep you in the saddle longer, securing your helmet with a snug and comfortable fit. Deeper rear protection and a MIPS layer combine to give you extra confidence while shredding. Coyote MIPS has the Virginia Tech 4-star “Very Good” protection rating. For those long rides that use up all the daylight, the Coyote MIPS is compatible with the rechargeable rear TS+ LED light, to keep you visible on the pedal home.

The Vanquish MIPS is the pinnacle of high-performance road cycling helmets, featuring the innovative TransformAir design that actively streamlines airflow to reduce drag. Inside the Vanquish is an EPS liner with progressive layering, and Giro's renowned RocLoc Air system seamlessly integrated with MIPS technology to enhance comfort and cooling power while providing an additional measure of protection. So whether you're hammering off the front, smashing an Ironman course, or laying down maximum wattage in the dash to the finish line, the Vanquish shapes the wind to work for you.

Redefine Your Comfort Zone. To make a DH-certified full face with the ventilation and fit of a half shell, our development team took a fully integrated approach when creating the Gambit. Every component was engineered utilizing a comprehensive approach resulting in truly breakthrough performance where the Gambit delivers more than the sum of its parts. For helmets sold in the U.S. and Canada: Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older. - Combines a lightweight carbon fiber shell, structurally specific polycarbonate backing, and five optimized pieces of targeted density foam (patent pending) for reduced weight, optimized fit, and increased ventilation. ASTM DH (1952) certified. - Tune a more precise, personalized fit thanks to Gambit’s adjustable Integrated Fit System that accommodates variations in head shape and occipital base. - Occipital base adjustment personalizes fit for comfort and allows you to tune helmet angle to ensure that your helmet and eyewear stay perfectly synched. - 4-position adjustable cheek pads provide fit refinement for any head shape. - Integrated, fixed visor with a breakaway feature provides a wide field of view while protecting against trail debris. - Average weight: 640 grams (medium). - Increased airflow and improved ventilation from the SBC Integrated Fit System does away with the excessive padding of a traditional full-face friction fit. - MIPS SL with our exclusive perforated backing integrates MIPS technology within the helmet padding and reduces moisture retention while increasing breathability. - Computational Fluid Dynamic design integrates the maximum volume of internal channeling for optimal airflow through the helmet. 4D brow cooling provides a gap between the helmet and forehead, drawing airflow into internal air channels at every speed.

Be so bold in the all-new Ambush 2. Fully redesigned from the buckle up with essential features for next-gen trail riding, the Ambush 2 channels ample ventilation through modern styling, with a superb fit and dialed eyewear integration. Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older. - Sized to drop in with a highly customizable fit and precision adjustment. The Ambush 2 features our SBC Integrated Fit system and adjustable Tri-Fix splitters to provide a dialed fit. - Fine-tune your vision using the Ambush 2’s Occipital Base Adjustment to precisely adjust how the helmet sits on the brow for seamless integration with goggles and glasses for an unrestricted view down the trail. - Innovative sunglasses storage with hidden rubber flaps maintains a secure, rattle-free fit, keeping your glasses safely stored when you need to get them out of the way during long climbs or moments of rest. - Computational Fluid Dynamic design integrates the maximum volume of internal channeling for optimal airflow through the helmet, drawing heat away from the head. 4D brow cooling, which provides a gap between the helmet and forehead, draws airflow into internal air channels at every speed. - Integrated fixed visor with a breakaway feature provides increased trail vision and a seamless interface with eyewear while effectively channeling airflow through the helmet for superb ventilation. - Strategically optimized dual-density EPS foam eliminates bulk and reduces excess weight. - The Ambush 2 earned the highest 5-Star Virginia Tech® Helmet Rating™ from the internationally renowned Virginia Polytechnic Institute and State University. - Features the MIPS SL solution with our exclusive perforated backing. Integrating MIPS technology within the helmet padding reduces moisture retention while increasing breathability. - This helmet is ANGi ready, with a fit system mount designed for easy integration with our ANGi crash sensor. - Average weight: 360 grams (medium).

All-purpose, value-packed helmet balances performance and comfort. Value-packed protection Wear it and believe it. The Solstice is proof you don't have to spend a lot of money to get a great fitting, easy-to-use cycling helmet designed to keep you protected during all your bike riding adventures. Product details - Designed for larger vents and increased airflow while maintaining structural integrity - Built-in and removable visor options give you two choices for constant coverage - Intuitive, one-handed Headmaster fit system adjusts height and circumference - LockDown dividers make helmet strap management clean and easy to adjust - Internal, recessed channels move airflow over your head to keep you cool and dry - Soft, comfortable, moisture-wicking, and washable helmet pads - Crash Replacement Guarantee provides free helmet replacement if it is involved in a crash within the first year of ownership Specifications - Size (head circumference): Small/Medium (51-58cm); Medium/Large (55-61cm) - Fit system: Headmaster II - Pad material: Moisture wicking pads - Buckle type: Standard buckle - Includes: Visor plugs - Weight: 290g (Small/Medium)

Take your protection to the next level. Bontrager Specter WaveCel offers the best in versatility and comfort for everyday rides on roads, trails, gravel, and more. From dirt to pavement, fast or slow, this new wave of protection delivers the confidence you need anywhere you ride or race. WaveCel is a collapsible cellular structure that lines the inside of the helmet. This Bontrager-exclusive technology disrupts the safety standards the industry has accepted for over 30 years. - WaveCel advanced helmet technology - The Boa System lets you easily secure and adjust helmet fit with just one hand - Fidlock magnetic buckle fastens effortlessly for a quick, secure fit - Highly ventilated design offers more airflow to keep you cool - Soft, comfortable, moisture-wicking, and washable helmet pads - Reflective elements on back of helmet offer enhanced visibility to be seen - Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownership Sizing: - Small: 51-57cm - Medium: 54-60cm - Large: 58-63cm