Adults

The Merit Spherical is the ideal choice for fast, flowy trail riding and hard pedaling. With Spherical Technology, it offers more comprehensive performance and protection with the combination of a MIPS brain protection system to redirect rotational impact energy. Plus, separate inner and outer liners featuring Progressive Layering help manage high- and low-speed impacts. Massive Wind Tunnel vents are combined with channels in the EPS foam liner, creating amazing airflow through the helmet to exhaust heat out, even on long, hot climbs. Fit and stability adjustments are fast and easy with the Roc Loc Trail Air fit system, and plush Ionic+ padding provides exceptional sweat absorption while combating odor with permanent antimicrobial performance.

From long climbs to rowdy, technical descents, the Montaro MIPS helmet inspires your ride no matter where the trail takes you. Its compact shape offers deep, confident coverage, and the Roc Loc Air fit system boosts ventilation while improving fit. In addition to this helmet’s already impressive cooling power, it’s outfitted with hydrophilic, anti-microbial pads that can absorb up to ten-times their weight in sweat. Giro designed the Montaro MIPS to have full goggle integration, with strap grippers on the back of the helmet, and a P.O.V. Plus visor that allows you to lift the visor and place your goggles on the front of the helmet. Yet another great feature is the full camera mount integration—a clever break-away interface for your favorite light or camera.

An updated classic. Already one of our most popular trail helmets of all time, the Montaro MIPS II now benefits from the Roc Loc 5 Air MIPS System. This sleek design integrates 2-way fit and stability adjustment with the MIPS brain protection system for an added measure of protection from rotational forces without excess plastic against your skin. The helmet's compact shape offers deep coverage and an in-mold hardbody shell for enhanced durability without excess weight. In addition to advanced brain protection, the Montaro II is outfitted with IONIC+ padding with permanent antimicrobial performance plus 16 vents with internal channeling to keep you cool and comfortable. We also built in all of the features you need for great fit with goggles, including strap grippers on the back of the helmet and our patented P.O.V. Plus visor that allows you to lift the visor and place your goggles on the front of the helmet when your run is done. A clever breakaway interface for your favorite light or camera is included, too.

The Radix MIPS helmet combines rugged style and durability to meet the demands of core trail riders, with the coverage, lightweight, and ventilation riders need to ride comfortably and confidently, all day. The Radix MIPS helmet is for the rugged adventurer who appreciates a perfect fit, the sun staying out of their eyes, and plenty of ventilation. The highly adjustable Roc Loc 5.5 MIPS system allows you to customize fit and feel for enhanced stability and long-range comfort while providing an added measure of protection from rotational forces in the event of an angled impact. The P.O.V. Visor offers 15 degrees of adjustment, and the tough polycarbonate outer shell is fused permanently to the EPS foam liner using our in-mold construction process, to enhance durability and ventilation without excess bulk. - Construction: Full-wrap in-mold polycarbonate shell with EPS liner - Sport: Cycling - Number of vents: 25 - Ventilation type: Wind tunnel vents with internal channeling - Fit system: Roc Loc 5.5 MIPS

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.

The Source MIPS helmet combines advanced performance and protection in a rugged, trail-ready design. Featuring deep coverage with aggressive ventilation from 16 vents coupled with deep internal channeling, it helps keep things cool even when the riding gets rowdy. And with the comfort and secure feel of the Roc Loc 5 fit system with Integrated MIPS brain protection, plus a moto-style adjustable screw-in visor and full lower Hardbody durability, you get a helmet that's capably equipped for fun and adventure. MIPS: - Integrated MIPS (Multi-Directional Impact Protection System)—allows you to customize fit/feel for great stability and long-range comfort while providing an added measure of protection from rotational forces in the event of an angled impact Construction: - In-Mold polycarbonate shell and EPS liner - Polycarbonate Hardbody lower shell Visor: - Adjustable moto-style screw-in visor Interior/liner type: - Coolfit anti-microbial padding Ventilation type: - 16 Wind Tunnel Vents with internal channeling Fit system: - Roc Loc 5 Impact liner type: - EPS foam liner Product weight: - 340g (size Medium)

The Synthe is the pinnacle of road helmet design, combining the performance gains of aero efficiency and light weight with great cooling power to enhance rider comfort and efficiency. The compact form slips through the air with ease across multiple yaw and head angles, and offers greater cooling power than the Aeon. Key features include the Roc Loc Air fit system with 2-way fit tuning and Aero Mesh Panels with a dedicated port for securely docking sunglasses as you ride. Synthe MIPS models are equipped with the Multi-Directional Impact Protection System. MIPS can provide more protection in certain impacts, and this added “under the hood” technology does not compromise fit, ventilation or style.

Premium Style for Recreational MTB How do you improve on the #1, top-selling helmet on Earth? Carefully, and with meticulous attention to detail. This updated helmet boasts a revised silhouette, redesigned integration of the Mips® Brain Protection System, and improved cooling power. Whether you're headed for off-road adventure or just a relaxing spin, the Fixture™ Mips II offers the right combination of value, performance, and classic design that can't be beat. With a strong and striking style, quick-dry padding, a simple and durable Roc Loc® Sport fit system, and reflective rear decals, every rider demand has been addressed. After all these updates and improvements, you'd be forgiven for thinking we doubled the price of this second-generation Fixture, but the Fixture Mips II retains its position as the value leader. - INTEGRATED MIPS® BRAIN PROTECTION SYSTEM — All Giro helmets are designed to reduce as much energy as possible while meeting and exceeding stringent safety standards. The goal of Giro's Integrated Mips®-equipped helmets is to reduce rotational forces while enhancing fit and comfort by combining the Mips slip plane with the helmet's adjustable fit system. Giro believes that helmets equipped with this technology can reduce the amount of rotational force that may be transferred to rider's brain in certain impacts. Learn more about Mips in the video above. - IN-MOLD CONSTRUCTION — In-Mold Construction fuses a tough polycarbonate outer shell with the helmet's impact-absorbing foam liner. The fusion process allows for better ventilation systems, making in-mold helmets lighter and cooler than traditional helmets. - ROC LOC® SPORT FIT SYSTEM — The Roc Loc® Sport fit system offers easy one-handed operation with a 7cm adjustment range. Its confident clicking feel and sound lets riders know that the helmet is adjusting to a comfortable fit. With comfort similar Roc Loc 5 and ponytail compatibility, the new Roc Loc Sport fit system brings premium function to sport level helmets. - REFLECTIVE DETAILS — Reflective Details enhance visibility at nighttime or in low-light conditions when illuminated by a light source, such as headlights, by returning the light back to the source and reaching the driver's eye. - UNIVERSAL FIT™ SIZING — Our Universal Fit helmets are sculpted to look good and fit great for almost anyone on the first try. By developing proprietary shell sizes based on specific customer groups, and combining them with an easily-adjustable fit system, it's easy for you get the right fit, straight out of the box, without the hassle or expense of trying multiple sizes. - Quick-dry padding Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older

Key Features: - Mips® equipped - BOA® Fit System to fine-tune your fit - FIDLOCK® SNAP magnetic buckle for quick and secure operation - Integrated sunglasses holder Versatile, lightweight trail helmet The all-new Crossframe Pro Helmet is bred for elevated heart rates, ?at-out sprints, and everything in between. Lightweight, versatile, and crafted with Mips® and BOA®, this helmet is ready for any trail that you are. Specifications: - Mips® added protection system has been proven to reduce the rotational motion when implemented in a helmet by absorbing and - redirecting energies and forces otherwise transmitted to the brain - Dual-density Varizorb EPS provides improved protection by spreading forces of impact across a wider area - FIDLOCK® SNAP helmet buckle provides quick and secure entry and exit, even while wearing gloves - Strap divider adjustment for repositioning the angle of the chinstrap - Removable, washable Ionic+® liner is anti-microbial and manages odor while wicking moisture away from the head - Optimized venting with channeled, in-molded EPS provides efficient cooling - BOA® Fit System with micro-adjustability allows you to fine-tune your fit on the fly - Rear cradle adjustment for setting the BOA dial to an ideal position - TPU vent inserts to keep your sunglasses securely stored when not in use

Key Features: - Mips® equipped - BOA® Fit System to fine-tune your fit - FIDLOCK® SNAP magnetic buckle for quick and secure operation - Integrated sunglasses holder Versatile, lightweight trail helmet The all-new Crossframe Pro Helmet is bred for elevated heart rates, ?at-out sprints, and everything in between. Lightweight, versatile, and crafted with Mips® and BOA®, this helmet is ready for any trail that you are. Specifications: - Mips® added protection system has been proven to reduce the rotational motion when implemented in a helmet by absorbing and - redirecting energies and forces otherwise transmitted to the brain - Dual-density Varizorb EPS provides improved protection by spreading forces of impact across a wider area - FIDLOCK® SNAP helmet buckle provides quick and secure entry and exit, even while wearing gloves - Strap divider adjustment for repositioning the angle of the chinstrap - Removable, washable Ionic+® liner is anti-microbial and manages odor while wicking moisture away from the head - Optimized venting with channeled, in-molded EPS provides efficient cooling - BOA® Fit System with micro-adjustability allows you to fine-tune your fit on the fly - Rear cradle adjustment for setting the BOA dial to an ideal position - TPU vent inserts to keep your sunglasses securely stored when not in use

- MIPS' added protection system has been proven to reduce the rotational motion when implemented in a helmet by absorbing and redirecting energies and forces otherwise transmitted to the brain - Dual-density Varizorb EPS provides improved protection by spreading forces of impact across a wider area - 8 Big Bore vents and 7 exhaust vents keep you cool and aid in moisture management - The securely fixed visor is positioned to channel airflow into the Big Bore vents - Fidlock SNAP helmet buckle provides quick and secure entry and exit while wearing gloves - Removable antimicrobial and moisture wicking liner - Includes additional pads for custom dialed fit - EPS, PC, PA, Epp, Polyester

Our Full-Coverage Open-Face MTB Helmet Redefining open-face helmets, the Dropframe Pro has earned Virginia Tech's best rating (5 STARS) in their Bicycle Helmet Ratings program with the best rating of any helmet they have ever tested. Super-light and extremely comfortable, it's the choice for trail riders seeking more coverage, more confidence, and more fun. This game-changing open-faced enduro helmet features MIPS, our dual-density Varizorb EPS liner, and increased coverage for the ears, jaw, and back of the head. This MTB helmet provides the most complete coverage we offer in an open-face helmet. Features - Proven MIPS impact protection system reduces rotational forces in a crash - Dual-density Varizorb EPS liner is meant to provide improved impact protection - 8 Big Bore vents and 7 exhaust vents keep you cool and aid in moisture management - Fixed visor is positioned perfectly for maximum air flow - Fidlock SNAP helmet buckle provides quick entry and exit - Removable antimicrobial and moisture-wicking liner - Includes additional pads for a custom fit - Small = 52 – 54cm - Medium = 54 – 56cm - Large = 56 – 58cm - X-Large = 58 – 60cm Certifications - CPSC - EN 1078 - AS/NZS 2063

The Flight Sport is the entry-level version of our BMX dirt jump helmet. A single-density layer of EPS combined with our proven ABS hard outer shell inspires confidence for riders of any age and experience level. Features - Dirt jump and trail specific functionality - Single density EPS liner - Thin ABS shell for reduced weight - 8 large Big Bore vents for increased airflow - Heat-sealed comfort liner for a clean look and feel

The Flight Sport Helmet is the entry-level version of Fox's BMX/dirt jump helmet. A single density layer of EPS combined with a proven ABS hard outer shell inspires confidence for riders of any age and experience level. Technical Details - Dirt jump and trail specific functionality - Single density EPS liner - Thin ABS shell for reduced weight - 8 large Big Bore vents for increased airflow - Heat sealed comfort liner for a clean look and feel

Stylish, affordable, MIPS™ trail helmet The Mainframe MIPS™ Helmet gives you exactly what you're looking for in an affordable helmet: proven safety features combined with easy trail steez. Featuring extended coverage to protect more of your noggin', the proven MIPS™ impact protection will keep your brain safe in the event of a crash by absorbing and redirecting energies and forces that could otherwise damage it. With a lightweight fit system, the Mainframe MIPS Helmet will also keep you cool, and should the sweat stank builds up, you can easily whip the moisture-wicking liner out and run it through the wash. Great protection at a price that'll save your wallet undue stress. - Proven MIPS™ impact protection system reduces rotational forces in a crash - Extended coverage for added safety - Optimized venting with channeled, in-molded EPS provides efficient cooling - Removable, washable moisture wicking liner - MIPS™ integrated fit system reduces weight and provides a more comfortable, seamless fit - Weight: 390 g, medium - EPS, PC, PA, polyester

Breathable full-face mountain bike helmet. Conquer the mountain with this full-face protection specialist. The Proframe Helmet is the original full-face trail helmet and is still the market leader. Designed to meet the needs of all-mountain riders and enduro racers, it packs Mips® technology into a superlight shell. Key Features and Specifications: - Mips® added protection system has been proven to reduce the rotational motion when implemented in a helmet by absorbing and redirecting energies and forces otherwise transmitted to the brain - 3-position adjustable visor compatible with goggles - Removable under visor GoPro mount included - Increased ventilation and decreased surface contact area improve cooling - Includes additional pad set to optimize fit Meets the ASTM-F1952 Downhill MTB certification standard Note: Avoid exposure to aerosol sprays like bug repellent and sunscreens as they can cause your helmet's finish to peel Materials: 22% ABS, 21% EPS, 15% polycarbonate, 13% polyurethane, 9% Pa

The Proframe helmet is the lightest and most breathable full face helmet Fox has ever created. Designed to perform at the highest levels for the aggressive all mountain rider and enduro racer, it packs DH certified protection into a superlight shell via Fox's patent-pending, fully-integrated Chinbar. With 24 Big Bore vents, the Proframe offers open face level airflow and breathability to keep you cool on even the longest and most challenging climbs; and once you reach the top, it gives you the confidence to ride to your limits on even the toughest of descents. Features: - Ultra-lightweight enduro and all mountain helmet - Patent pending integrated chinbar - Highly breathable, moisture wicking and anti-microbial liner - 24 Big Bore vents for unrivaled breathability - Fixed visor is positioned perfectly for maximum air flow - Fidlock SNAP helmet buckle provides quick entry and exit - MIPS™ impact protection system reduces rotational forces in a crash - Dual density Varizorb EPS liner provides improved protection - Our lightest DH certified helmet: 750g. (size medium) Certifications: - ASTM F1952 (including chin bar rigidity test) - EN 1078 - AS/NZ 2063 - CPSC

Proframe RS from Fox Racing.

Proframe RS Mhdrn from Fox Racing.

The Speedframe MIPS Helmet has premium features usually meant for much more expensive helmets. A MIPS liner, goggle compatible 3-position visor, and our 360-degree fit make the Speedframe one of the best values in an open-face mountain bike helmets. Add in the legendary aggressive Fox design DNA, and you have one of the most shred-ready mtb helmets in the market today. - Proven MIPS impact protection system reduces rotational forces in a crash - Removable, washable moisture-wicking comfort liner - Optimized venting with channeled, in-molded EPS provides efficient cooling - Goggle compatible 3-position adjustable visor - 360 fit system allows you to dial in your perfect fit every ride - Note: Avoid exposure to aerosol sprays like bug repellent and sunscreens as they can cause your helmet's finish to peel - Weight: 360 g, medium

The Speedframe Helmet has premium features usually found only on much more expensive helmets. A Mips liner designed to reduce rotational motion and redirect forces away from your brain should you crash, a goggle-compatible 3-position visor, and our 360-degree fit system makes the Speedframe one of the best values in open-face mountain bike helmets. Add in the legendary aggressive Fox design DNA, and you have one of the most shred-ready mountain bike helmets on the market today.

Proven MIPS Coverage for Superior Open-Face Performance The Speedframe MIPS Helmet has premium features usually meant for much more expensive helmets. A MIPS liner, goggle compatible 3-position visor, and our 360-degree fit make the Speedframe one of the best values in an open-face helmet. Add in the legendary aggressive Fox design DNA, and you have one of the most shred-ready trail helmets in the market today. Features - Proven MIPS impact protection system reduces rotational forces in a crash - Removable, washable moisture-wicking comfort liner - Optimized venting with channeled, in-molded EPS provides efficient cooling - Goggle compatible, 3-position adjustable visor - 360 Fit System allows you to dial in your perfect fit every ride - Weight: 360g Sizing - Small = 51 – 55cm - Medium = 55 – 59cm - Large = 59 – 63cm Certifications - CPSC - EN 1078 - AS/NZS 2063

The Speedframe Pro Blocked Helmet has earned Virginia Tech’s best rating (5 STARS) in its Bicycle Helmet Ratings program. Designed with input from our pro mountain bike athletes, this top-tier open-face mountain bike helmet offers a market-leading feature set. Top of that list is MIPS, which is designed to reduce rotational motion and redirect forces away from your brain should you crash. Dual-density Varizorb EPS bumps up that impact protection even further by spreading forces of impact across a wider area. The 360-degree fit system and Fidlock SNAP helmet buckle ensure a perfect fit every time you ride, and the buckle is a cinch to operate, even with gloves on. The XT2 liner is antimicrobial and manages odor while wicking moisture away from the head, and once it gets a little stinky, is easily removed and washed. Goggles pair well with the Speedframe Pro Blocked Helmet too, thanks to the 3-position adjustable visor. If you’re looking for a performance-minded trail helmet, congratulations—you just found your new lid. - MIPS added protection system has been proven to reduce the rotational motion when implemented in a helmet by absorbing and redirecting energies and forces otherwise transmitted to the brain - Dual-density Varizorb EPS provides improved protection by spreading forces of impact across a wider area - Fidlock SNAP helmet buckle provides quick and secure entry and exit while wearing gloves - Removable, washable XT2 liner is antimicrobial and manages odor while wicking moisture away from the head - Optimized venting with channeled, in-molded EPS provides efficient cooling - Goggle compatible, 3-position adjustable visor - 360° Fit System allows you to dial in your perfect fit every ride - Note: Avoid exposure to aerosol sprays like bug repellent and sunscreens as they can cause your helmet's finish to peel

Performance-focused open-face trail helmet - MIPS' added protection system has been proven to reduce the rotational motion when implemented in a helmet by absorbing and redirecting energies and forces otherwise transmitted to the brain - Dual-density Varizorb EPS provides improved protection by spreading forces of impact across a wider area - Fidlock SNAP helmet buckle provides quick and secure entry and exit while wearing gloves - Removable, washable XT2 liner is antimicrobial and manages odor while wicking moisture away from the head - Optimized venting with channeled, in-molded EPS provides efficient cooling - Goggle compatible, 3 position adjustable visor - 360°Fit System allows you to dial in your perfect fit every ride

Designed with input from our pro mountain bike athletes, the Speedframe Pro Helmet has earned Virginia Tech#s best rating (5 STARS) in its Bicycle Helmet Ratings program for a reason. This top-tier open-face mountain bike helmet offers a market-leading feature set to keep you protected every time you hit the trails. Top of that list is Mips, designed to reduce rotational motion and redirect forces away from your brain should you crash. Dual-density Varizorb# EPS bumps up that impact protection further by spreading forces of impact across a wider area. The 360-degree fit system and Fidlock SNAP helmet buckle ensure a perfect fit every time you ride, with a buckle that's a cinch to open and close, even with gloves on. The XT2 liner is antimicrobial and manages odor while wicking moisture away from the head, and is easily removed and washed should it need it. Goggles pair well with the Speedframe Pro Helmet too, thanks to the 3-position adjustable visor. If you're looking for a performance-minded trail helmet, congratulations#you just found your new lid.

Performance-Focused Open-Face Trail Helmet The Speedframe Pro Helmet has earned Virginia Tech's best rating (5 STARS) in its Bicycle Helmet Ratings program. Designed with input from our pro mountain bike athletes, this top-tier open-face trail helmet offers a market-leading feature set including MIPS, an easily adjustable multi-position visor, and a 360-degree fit system. The pro version is equipped with a Varizorb dual-density EPS liner, Fidlock SNAP helmet buckle, and an XT2 antimicrobial comfort liner. Features - Proven MIPS impact protection system reduces rotational forces in a crash - Varizorb Dual-density Varizorb EPS - Fidlock SNAP helmet buckle provides quick and secure entry and exit while wearing gloves - Removable, washable XT2 liner is antimicrobial and manages odor while wicking moisture away from the head - Optimized venting with channeled, in-molded EPS provides efficient cooling - Goggle compatible, 3-position adjustable visor - 360 Fit System allows you to dial in your perfect fit every ride - Weight: 380g Sizing - Small = 51 – 55cm - Medium = 55 – 59cm - Large = 59 – 63cm Certifications - CPSC - EN 1078 - AS/NZS 2063

Speedframe Pro Helmet Lunar from Fox Racing.

Designed with input from our pro mountain bike athletes, the Speedframe Pro Klif Helmet has earned Virginia Tech#s best rating (5 STARS) in its Bicycle Helmet Ratings program for a reason. This top-tier open-face mountain bike helmet offers a market-leading feature set to keep you protected every time you hit the trails. Top of that list is Mips, designed to reduce rotational motion and redirect forces away from your brain should you crash. Dual-density Varizorb# EPS bumps up that impact protection further by spreading forces of impact across a wider area. The 360-degree fit system and Fidlock SNAP helmet buckle ensure a perfect fit every time you ride, with a buckle that's a cinch to open and close, even with gloves on. The XT2 liner is antimicrobial and manages odor while wicking moisture away from the head, and is easily removed and washed should it need it. Goggles pair well with the Speedframe Pro Helmet too, thanks to the 3-position adjustable visor. If you're looking for a performance-minded trail helmet, congratulations#you just found your new lid.

Equipped with pro-level technology but designed with the privateer in mind, the Bell 4Forty Air MIPS is the first choice for your next trail helmet. Trail Life The 4Forty Air MIPS is equipped with pro-level features designed with the privateer in mind. With a sleek new shell and 3-position visor, the benefits aren't just visibly rad but functionally significant for increased air ventilation, effective sweat management, and better goggle compatibility. Our Float Fit system, built-in Sweat Guide, and Ionic+ padding ensures all-day comfort, while Integrated MIPS and extended hard-shell coverage help you stay committed in all shred conditions. Upgrades like eyewear ports, a Fidlock magnetic buckle, and premium straps make the 4Forty Air MIPS your go-to for daily trail riding. [Availability, certification, color, and pricing may vary per region. If outside of the USA, please check with your authorized local dealer for more information.] - INTEGRATED MIPS—Integrated MIPS (Multi-Directional Impact Protection System) is designed to reduce rotational forces that can result from certain impacts. By integrating the MIPS slip plane into the retention system, we are able to reduce complexity and weight for a compact, better ventilated helmet that fits more closely to the head. - FLOAT FIT—A minimalist, lightweight fit system with an easy-to-turn rubber overmolded dial for adjustments (integrated with MIPS). - FIDLOCK BUCKLE—Fidlock is an easy-to-use magnetic buckle. This time saving feature slides closed laterally for an effortless, secure fit. - NO-TWIST TRI-GLIDES—Quick-adjust fasteners that help keep straps flat and properly positioned - SWEAT GUIDE—Sweat Guide pad design pulls moisture away from the brow pad and away from eyewear. - IONIC+ PADDING—Quick-drying interior padding helps manage sweat while fighting odor-causing bacteria. - 3-POSITION ADJUSTABLE VISOR—3-position adjustable visor allows for sun protection and integrates easily with goggles or glasses. - GOGGLE GRIPPER—Rubber grip on the back of the helmet keeps your goggle strap in place. - EYEWEAR STORAGE—Easily stash your glasses using the integrated helmet notches. Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older

Commuting by bike can be exhilarating yet challenging, and Daily LED is designed to help empower your mission. Our 20-lumen rear LED light is unobtrusive, highly visible, rechargeable via micro-USB, and built into our proprietary integrated MIPS Ergo Fit system. Add in comfort features — including a stylish soft brim and No-Twist Tri-Glides for easy strap adjustment — and the Daily LED MIPS gives you the tools you need for a smooth commute. Specs - MIPS (Multi-directional Impact Protection System) - a leading slip-plane technology designed to reduce rotational forces that can result from certain impacts. By integrating the mips slip plane into the retention system, we are able to reduce complexity and weight for a compact, better ventilated helmet that fits more closely to the head. - Lithium battery packaged: in product - Number of batteries: 1 - Lithium battery energy content watt hours: 0.576wh - Chemical composition: stainless steel lithium - Construction: Fusion in-mold polycarbonate shell - a process pioneered by Bell bonds the helmet's outer shell to the EPS foam liner to create a sturdier helmet. - 14 vents - Compliance: CPSC bicycle - Fit System: Ergo fit LED - sleek, easy-to-use dial system for one-handed adjustments (integrated with MIPS layer) - Retention System: No-twist tri-glides: quick-adjust fasteners that help keep straps flat and properly positioned - Interior: Sweat guide pad design pulls moisture away from the brow pad and away from eyewear - Lighting: 20-lumen rechargeable LED built into the rear of the helmet - Universal Adult = 54 – 61cm - Universal Women = 50 – 57cm