Adults

The perfect lightweight helmet offers great head coverage for ultimate protection. This is a lot of helmets for the price. It offers extensive protection around the head and deeper rear coverage. It also includes Leatt’s 360 Turbine technology, which is proven to reduce the risk of concussion by up to 30% and rotation forces upon impact by 40%. With 14 vents and Maxiflow air channels, the lightweight construction also offers great ventilation for those hot days. Details: - Polymer Compound shell in three sizes - MaxiFlow impact foam air channels are effective even at low speed - 360° Turbine Technology - Reduced peak brain acceleration by up to 30% at impact speeds associated with concussion - Reduces peak brain rotational acceleration by up to 40% - Extended rear coverage for added protection - Adjustable visor with breakaway function for rotational impact force reduction - In-molded impact foam for great energy absorption - Maximized ventilation with 14 vents effective even at low speeds - Moisture-wicking, breathable, and washable inner liner - Weight: from 320g (0,70 lbs) - Certified and tested: AS/NZS 2063:2008, EN1078, CPSC 1203

For maximum safety, the Viantor has the ActiCage structural reinforcement integrated into the EPS. It provides maximum protection while ensuring optimal ventilation and extreme comfort. - ActiCage allows for large ventilation openings without compromising the helmet's safety - Multi Shell In-Mold for durable bonding of multi-part outer shell and shock-absorbing helmet material (EPS) - Good ventilation with 4 air inlets and 14 air outlets connected with flow channels - Zoom Ace fit system with a non-slip adjustment wheel - Semi-enclosing plastic ring connected to the adjustment system for optimum stability and fit - Ponytail-compatible and well suited for braided hairstyles Sizing: - Small: 51 – 55cm - Medium: 52 – 58cm - Large: 58 – 63cm

The Chakra Child features Kali's Composite Fusion technology, in-mold construction, and extended rear coverage for added safety and protection. A visor molded directly into the shell and a dial closure system will give any child the confidence and motivation to get out and ride. - Washable, anti-microbial, moisture wicking pads - Polycarbonate shell with EPS foam - Integrated visor - 21 vents provide maximum airflow

The MET Manta MIPS defines the MET aesthetic with its highly contemporary design and aerodynamic engineering. Featuring the MIPS-C2 rotational management system, the MET Manta MIPS is able to slide in the case of a crash, redirecting damaging rotational motion. MIPS is a brain protection system—engineered to add at least 10% extra safety to the standard construction of helmets in case of certain impacts. The MIPS Brain Protection System (BPS) is attached inside the helmet, between the comfort padding and the EPS. The Fidlock magnetic buckle makes it easier and faster to fasten the helmet. Despite being primarily an aero helmet it is also well ventilated. We've engineered the internal shape to channel the air, while MET's signature NACA Vent works in synergy with the specially positioned exhaust ensuring a constant airflow through the helmet, without catching the wind and creating drag. - In-mold polycarbonate shell with EPS liner - MIPS C2 rotational management system is engineered to add protection in case of certain impacts - Exceptionally comfortable and secure on the head thanks to refined internal shape - MET Safe-T Orbital Fit System - 360° head belt, and vertical and occipital adjustments offer a customized fit - Air Lite straps with adjustable divider maximize aerodynamic and comfort - Fidlock Magnetic Buckle makes it easier to secure the helmet - 15 vents are internally engineered with an air channeling system to improve ventilation and comfort - Sunglasses ports securely dock sunglasses when climbing or resting - Tube-shaped tail to improve aerodynamics - Reflective rear stickers - Certifications CE; AS/NZS; US Sizing: - Small/Medium = 52 – 56cm - Medium/Large = 56 – 58cm - Large/X-Large = 58 – 61cm

The Full Cut helmet features a retro design with compression-molded pads. - Classic ear protection styling - HDPE or ABS shell lined with EPS and outfitted with compression-molded pads - Two-stage premium liner - Stainless steel hardware - Soft tubular webbing - Multi-impact, and Multi-Certified (CPSC, CE, ASTM, AS/NZS 2063:2008) - Small = 54 – 56cm - Medium = 56 – 58cm - Large = 58 – 60cm - X-Large = 60 – 62cm

The Danu is a lightweight, eco-friendly helmet packed with features geared towards the avid commuter. The magnetic Fidlock snap buckle makes fastening the chin strap a one-handed operation, while the integrated visor provides convenient sun protection. - Composite Fusion protection - Removable visor - Recycled EPS foam and PET straps - Water based paint - 100% cotton pads - Dial-Fit closure system - Small/Medium = 55 – 58cm - Large/X-Large = 58 – 61cm

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 Comp with ANGi—a lightweight extended coverage helmet at a wallet-friendly price. Starting with protection, the Ambush Comp boasts a significant amount of extended coverage and a single density foam that's been reinforced by a Composite Matrix. The reason behind this is that it manages the energy from impacts more effectively. Even with the added protection, though, it fits comfortably with our low profile and fully integrated Mindset 360 fit system. And with its five height positions, this system provides unmatched adjustment, while an integrated dial allows for on-the-fly fine-tuning. The Ambush Comp 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. Our new ANGi Crash Sensor gives you and your loved ones peace of mind like never before—when combined with our iOS or Android app, the sensor will detect a crash and send a text message to specified contacts in your phone. It also syncs with our app and STRAVA to provide GPS-based activity tracking. 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 Comp well in front of the competition. - Composite Matrix internal reinforcement allows large vents for greater cooling. - In-molded shell improves strength and reduces weight. - Mindset 360 fit system provides a secure, comfortable fit with 360-degree tension adjustment, five height positions, and 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 storage. - 4th Dimension Cooling system optimizes ventilation. - Extended coverage for added protection and durability. - Tri-Fix web splitter for improved comfort and ease of strap adjustments. - MIPS-equipped. - Integrated ANGi crash sensor.

The Axion SPIN is a lightweight, well ventilated trail helmet with extended coverage around the temples and back of the head. Lightweight, well-ventilated and with extended coverage around the temples and at the back of the head, the Axion SPIN provides finely tuned trail protection. Including a 360° size adjustment system that makes it easy to find a precise fit, the helmet features a fully wrapped unibody shell for improved structural integrity. The adjustable breakaway peak works to enhance safety in a crash, as it reduces forces transmitted to the neck. The peak can be adjusted so protection from sun, rain and mud can be tailored to individual needs. Designed for trail and enduro riders, the Axion SPIN benefits from channels and vents that control airflow to keep a rider cool in all conditions. - Lightweight, highly ventilated trail and enduro helmet - Patent-pending breakaway peak to reduce neck injury - Fully wrapped unibody shell - Optimized PC shell - Optimized EPS liner - Extended shell around temples and back of head - Adjustable peak - 360° fit system - SPIN (Shearing Pad INside), our patent-pending silicone pad technology

SAFETY ON STEEP TRAILS Steep climbs, high-speed racing, all-day adventures: "Down-country" is action-packed, which means the demands on equipment also increase. Down-country is all about going up fast, down fast and repeating. The Moventor 2.0 MIPS is virtually perfectly for the demands of mountain bikers. The MTB helmet is lightweight, well ventilated and has a deeper fit that gives more protection at the back of the head. When the trail points downwards, the ten air inlets and nine air outlets provide good ventilation. In addition to all the well thought-out features for off-road use, the MIPS model has impact protection. This is intended to protect the brain, especially if the cyclist's head hits the ground at an angle during a fall. In a fall, the brain is exposed to strong rotational movements that can lead to severe brain injuries. With MIPS, a movable low-friction plastic shell is integrated into the helmet to ensure that rotation is reduced and the head is better protected. - Multi-Shell In-Mould for a permanent bond between the outer shell and the shock-absorbing helmet material (EPS) - Zoom Ace MTB: Height-adjustable adjustment system to fit the head circumference - Ponytail compatibility: Helmet well suited for ponytail wearers - Laterally adjustable, non-slip TriVider strap system - Moulded lower shell for added durability - QUIN ready—easy upgrade with the separately available QUIN chip for fall detection - MIPS: Impact protection that protects the brain, especially when the cyclist's head hits the ground at an angle during a fall. - GoggFit: Device that allows a pair of goggles to be fixed to the helmet when the athlete doesn't need them while riding - Ventilation: excellent ventilation through 10 air inlets and 9 air outlets

- 23 big bore vents for no compromise airflow - The most ventilated full-face hard shell helmet on the market - ABS shell offering shock absorbency and incredible value for the money - CRV (crash Release Visor) system allows visor to release on impact

- Lightweight ABS Shell - 17 vents provide cool air intake and heat exhaust - Large eye port for greater field or vision and improved goggle fit - Complies to CE SPSC and AS standards - Third party online sales strictly prohibited by manufacturer

- Provides increased coverage improved venting lighter weight and a sleeker profile than its predecessor while managing energy more efficiently over a broader range of energy demands - The ATB-2T reduces angular acceleration energy transfer

- Constructed with recycled EPS an Oceanworks-« visor recycled (PET) water bottle straps and sustainably sourced bamboo pads - Uses ConeheadGäó to help dissipate the energy in a high-g impact and a RHEONGäó Low Density Layer to help mitigate the low-g

The Kali Protectives UNO Helmet is the one helmet to rule them all. The UNO looks great, stays cool, and offer exceptional safety wherever the road might take you. - LDL - QuadCore technology is used throughout the interior of the helmet to reduce rotational impact forces up to 25%, and reduce low-g linear forces up to 30% - Anti-microbial pads - Locking buckle and sliders - Micro-fit closure system - 21 vents

Built for the wanderer in you. Finally a helmet for everyone. Whether you're a commuter, riding gravel, or just like to ride your bike to meet friends for coffee, the Nutcase VIO Adventure doesn't discriminate. - Made with Nutcase's exclusive and patented Exoskeleton technology with a 2-piece in-mold Duo Density EPS foam construction - A denser outer layer of foam protects your head in an and a softer inner layer that cushions the brain after initial impact, providing the double protection - Features MIPS technology (Multi-directional Impact Protection System) that helps protect against angled impact - Cradle is adjustable for superior comfort - Fidlock magnetic closure for easy on and off - 9 vents to help keep you cool - Premium heat sealed Static X Anti-microbial pads to keep the stink away - Reflective front and rear logos

The Pedelec 2.0 offers an uncompromising combination of comfort and protection. Complemented by clever features, it is the ideal companion when cycling in road traffic. - In-Mold for a durable connection with the outer shell with shock-absorbing helmet material (EPS) - Forced Air Cooling Technology ventilation system keeps you cool and comfortable with 4 air inlets and 9 air outlets connected with flow channels - Zoom Ace Urban adjustment system with handy adjustment wheel for a customizable fit - Size adjustment by means of a half-ring made from particularly hard-wearing and slightly malleable plastic for optimal stability and fit - High visibility due to powerful reflectors and an integrated LED taillight with 180-degree visibility - Foamed-in fly nets keep insects out - Lower edge protection provides the helmet with additional protection from external influences - Fidlock magnetic strap buckle - Ponytail-compatible and well suited for braided hairstyles Sizing: - Medium: 52 – 57cm - Large: 56 – 62cm

FOR MORE SAFETY The ABUS MoDrop MIPS can handle any terrain and any riding style and always leaves you wanting more. The mountain bike helmet is the best companion for big mountain days, experiences on the trail or just leisurely family outings. Equipped with our MTB-specific adjustment system and TriVider webbing distributors, this helmet offers many features that make it more comfortable to wear. The height-adjustable, visor-like visor protects you from hanging branches when riding downhill. In the event of a fall, it can also prevent direct impact with the face. Additional safety is provided by the MIPS impact protection. This is intended to protect the brain, especially if the cyclist's head hits the ground at an angle during a fall. In a fall, the brain is exposed to strong rotational movements that can lead to severe brain injuries. With MIPS, a movable low-friction plastic shell is integrated into the helmet to ensure that rotation is reduced and the head is better protected. - Multi-Shell In-Mould for a permanent bond between the outer shell and the shock-absorbing helmet material (EPS) - Zoom Ace MTB: Height-adjustable adjustment system to fit the head circumference - Ponytail compatibility: Helmet well suited for ponytail wearers - Laterally adjustable, non-slip TriVider webbing distributor - Molded lower shell for added durability - QUIN ready—easy upgrade with the separately available QUIN chip for fall detection - GoggFit: Device that allows a pair of goggles to be fixed to the helmet when the athlete doesn't need them while riding - MIPS: Impact protection that protects the brain, especially when the cyclist's head hits the ground at an angle during a fall. - Ventilation: excellent ventilation for this helmet type due to 6 air inlets and 8 air outlets - Bug mesh: thorough protection against insects

Designed with the speed of pro riders in mind, the Bluegrass Rogue Core MIPS is sharp, bold, and alternative. It's designed to properly protect the most sensitive head areas, the back, and the temples. - The Rogue Core Mips exceeds worldwide certifications and performs best at both linear and rotational impact thanks to its meticulously engineered EPS shell and the MIPS-C2® brain protection system attached inside the helmet - The visor is designed to enhance safety and protect from branches - In the event of a crash, the visor will adapt to the shell of the helmet to help withstand extra rotational forces transferred to the neck - The Safe-T Heta retention system provides an exceptional fit and keeps the helmet stable on the head - The 360° head belt ensures that there are no pressure points on the skull, while vertical adjustments provide a custom fit - The edge at the back of the helmet is designed to properly keep the goggle strap in place - Sunglasses can be securely docked into the two visor vents - The straps anchors are embedded into the EPS and you can quickly fasten them thanks to the Fidlock® magnetic buckle, even while wearing gloves

The Bluegrass Legit Helmet is a budget-friendly full-face helmet equipped with many racing-inspired features. - Fiberglass outer shell with EPS liner for optimal fit - Safety-release visor system includes a flexible visor to manage twisting forces - Includes 11 vents and a breathable chin guard for comfort - Designed with hearing vents to help riders maintain balance and hit their optimum performance levels - Allows for a wide field of vision and is goggle-compatible - Soft back-head support makes this helmet exceptionally comfortable - Fully removable, hand-washable padding - MX-style straps and a double-D buckle

The GameChanger sets new standards. What is a cyclist's biggest enemy? Air resistance. Every cyclist knows that battling against the wind is one of the toughest challenges they face. With its Multi Position Design, the GameChanger redefines aerodynamics. The special shape reduces air resistance by minimizing exposed surfaces regardless of weather conditions, head-tilt position, and inflow angle. Our innovative Forced Air Cooling Technology sucks in incoming air and channels airflow around the head, creating a perfect climate and keeping your head cool, even in hot races. - Multi Position Design: For optimal aerodynamics regardless of head tilt - Forced Air Cooling Technology: Sophisticated ventilation system for an optimal head climate - FlowStraps: Aerodynamic, flutter-free, and skin-friendly thanks to specially developed strap profile - Zoom Ace: Finely adjustable adjustment system with handy adjustment wheel for customizable fit - AirPort: Aerodynamic glasses holder with strap guide - Multi Shell In Mold: For safe shock absorption - Ponytail compatibility: Helmet well suited to plait wearers Sizing: - Small: 51 – 55cm - Medium: 52 – 58cm - Large: 59 – 62cm

PROTECTED ALL AROUND With the AirDrop, ABUS offers its first full-face helmet that provides the best protection even for your most daring jumps. Enduro racers, downhillers, E-MTB riders and alpine adventurers are always pushing the limits of mountain biking. Increased protection used to mean heavy, hot and claustrophobic full-face helmets. The ABUS AirDrop, by contrast, features ASTM-certified DH safety levels with exceptional ventilation and trail-friendly weight. New technologies like our EVA collarbone protector inserts, breakaway visor attachments and side communication channels bring real benefits to bike parks and the backcountry. If gravity is the thrill you need, the AirDrop is the MTB helmet for you. - In-mould manufacturing for a durable connection to the outer shell with shock-absorbing helmet material (EPS) - Zoom Ace FF: Adjustment system to fit the head circumference - Collarbone protection edges - QUIN ready—easy upgrade with the separately available QUIN chip - Breakaway visor bolts - ASC—ABUS communication channels increase spatial awareness - Breathable cheek pad inserts - Design suitable for spectacles - Double D-ring buckle system - Ventilation: excellent ventilation through 11 air inlets and 6 air outlets

The combination of innovative design, the latest technology, outstanding functionality, maximum ventilation, and low weight make the Aventor a real allrounder. The Aventor is the perfect helmet for cyclists who need a cool head for riding in high temperatures and on challenging stages. - Double shell, in-mold construction for durable fusion of the outer shell with the shock-absorbing helmet material (EPS) - Lower edge protection provides the helmet with additional protection coverage - ActiCage, structural reinforcement integrated into the EPS, optimizes stability - Zoom Ace, fine adjustment system with handy dial provides a personalized fit - Half-surrounding plastic ring connected to adjustment system - Ponytail compatible - Fidlock magnetic strap buckle Sizing: - Small: 51 – 55cm - Medium: 54 – 58cm - Large: 57 – 61cm

PROFESSIONAL TECHNOLOGY FOR BEGINNERS The Viantor is the high-quality and lightweight helmet for beginners in which we have used many proven technologies from the professional sport. Let yourself be convinced by a high-quality and safe helmet, which has the advantages of a professional race helmet. For maximum safety, the Viantor has the ActiCage structural reinforcement integrated in the EPS. It provides maximum protection while ensuring optimal ventilation and extreme comfort. The ActiCage allows for large ventilation openings without compromising on the helmet's safety. Due to its ponytail compatibility, the Viantor from ABUS is the first choice for riders with long hair. Multi Shell In-Mold for durable bonding of multi-part outer shell and shock-absorbing helmet material (EPS) - Ponytail compatibility: Helmet well suited for braided hairstyles - Good ventilation with 4 air inlets and 14 air outlets connected with flow channels - Semi-enclosing plastic ring connected to the adjustment system for optimum stability and form-fitness - ActiCage: Structural reinforcement integrated in the EPS to optimize stability - Zoom Ace: Fine-adjustable adjustment system with non-slip adjustment wheel for individual fit

- Bern's entry into the road helmet market with a lightweight, aerodynamic design with max ventilation - MIPS equipped for maximum protection - Lightweight and breathable 360-degree adjustable Bern Yoke fit system developed with Boa - Reinforced in-mold EPS construction with 18 total vents - Interior air flow channels for added ventilation - Built-in sunglass storage on the shell exterior - Antimicrobial comfort padding - Small: 52-55.5cm, Medium: 55.5-59cm, Large: 59-62cm - 287g

Helmets have long been plagued by an unspoken rule: Light weight, ventilation, aerodynamics—pick two, there's your helmet. As you can tell by now, though, we don't play by these rules—or really any for that matter. We'd rather turn standards on their head and create products that nobody ever dreamed of. And you needn't look any further than the new S-Works Evade helmet for proof of this. Straight up, it's the fastest road helmet out there. Our new ANGi Crash Sensor gives you and your loved ones peace of mind like never before—when combined with our iOS or Android app, the sensor will detect a crash and send a text message to specified contacts in your phone. It also syncs with our app and STRAVA to provide GPS-based activity tracking. - Integrated ANGi crash sensor. - Includes a lifetime subscription to the Specialized Ride app. - New MIPS SL is the lightest, most ventilated MIPS protection to date and is exclusively available on Specialized helmets. - Through extensive Win Tunnel development, the Evade is the fastest road helmet we've tested. - 4th Dimension Cooling System with deep internal channels, large vents, and aligned exhaust ports make it the best combination of aerodynamics and ventilation. - Patented Energy Optimized Multi-Density EPS construction helps to manage impact energy. - Patented Aramid-Reinforced Skeleton provides internal EPS support to help manage impact energy. - Ultra-light Mindset HairPort II micro-dial fit system with height adjustability for the perfect fit. - Gutter Action brow pad design for increased comfort and sweat management. - 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. - Magnetic buckle is simple and secure.

- Lightweight fiberglass shell - 23 Large freeflow vents with internal channels for maximum cooling. - Energy absorbsion and slip plane technology - Crash release visor system - Easy position visor, no bolts needed - Quick release liner for easy washing - Agion Bluesign approved antimicrobial treatment - Fidlock magnetic closure - Certified: CPSC Bicycle & ASTM F1952-15 (Downhill) Sizing: - Small = 55 – 56cm - Medium = 57 – 58cm - Large: 59 – 60cm - X-Large: 61 – 62cm - XX-Large: 63 – 64cm

- 15% lighter than classic Brentwood - 20% more ventilation than classic Brentwood (13 vents) - Zip Mold + construction - EZ-Fit retention system - Compatible with Bern Asteroid light - Removable flip visor - Average weight: 345g - MIPS: multi-directional Impact Protection System

Renowned for its ventilation and comfort, this enduro MTB helmet has been advanced from the much loved 4.0 full-face helmet. Packed with unique features there is not another helmet on the market like it! A removable mouthpiece in the chin bar increases ventilation or can be installed to protect you when riding in poor weather conditions. A universal sunglasses dock lets you safely dock your sunglasses under the visor when not in use, protected from scratches and unwanted impacts. The adjustable visor opens up enough to place your goggles underneath, so you don’t have to constantly remove them. This fully ASTM DH-certified helmet is the go-to helmet for Enduro riders. Uphill or downhill, E-bike or trail - you name it, the Leatt 4.0 Enduro helmet has you covered. The full-face design with a removable chin bar with an incredibly strong magnesium lock offers outstanding ventilation and its convenient Fidlock® buckle makes life just peachy! We all crash. Sometimes hard, and sometimes even harder! Leatt helmets feature 360 ° Turbine Technology that reduces both rotation acceleration and concussion level impact energy to your head and brain! Do not be afraid to push your limits. Details: - DH-certified lightweight Polymer shell - Removable chin bar with NEW easy-fit attachment system - Sunglasses dock port for easy, secure storage - Fidlock magnetic closure system - 360° Turbine Technology - Reduced peak brain acceleration by up to 30% at impact speeds associated with concussion - Reduces peak brain rotational acceleration by up to 40% - Maximized ventilation with 18 vents. Optimized for riding and effective even at low speeds - Moisture-wicking, breathable, anti-odor, and washable inner liner - Optimal neck brace compatibility - Adjustable visor with breakaway function for rotational impact force reduction - In-molded EPS + EP0 impact foam for superior energy absorption - Weight: From 810g (1.79 lbs) - Certified and tested: AS/NZS 2063:2008, ASTM F1952–10, EN1078, CPSC 1203

The Leatt MTB Gravity 1.0 is a full-face helmet with solid protection. The focus of this helmet is premium safety and great value. Featuring 360 ° Turbine Technology, the helmet is lined with turbines which are 360 °moving discs constructed from an energy-absorbing shape and material, this tech has two exclusive advantages, namely the reduction of rotational acceleration to the head and brain and the absorption of energy upon impact at concussion level. Air vents are not covered, which makes this helmet well-ventilated. Ideal for warmer downhill or bike park days. Get full face head and brain protection at an amazing price. Details: - Downhill-certified ASTM polymer shell in three sizes - Great ventilation - 360° Turbine Technology - Reduced peak brain acceleration by up to 30% at impact speeds associated with concussion - Reduces peak brain rotational acceleration by up to 40% breakaway visor function for additional rotational impact force reduction - Double D ring chin strap - Impact foam for superior energy absorption - Washable inner liner - Optimal neck brace compatibility - Weight: From 960 ± 50g (2.12 lbs) - Certified and tested: AS/NZS 2063:2008, ASTM F1952–10, EN1078, CPSC 1203

- COB LED Technology: it's a more compact footprint while delivering a higher intensity of light, meaning you'll be seen from further away and gives the lights a more uniform look - The helmet will be equipped with 98 COB LEDs in total - Front Light (30 COB LED diodes) - Rear Lights with Turn Signals (34 red COB LED diodes, 34 orange COB LED diodes) - 1100mAh rechargeable battery providing up to 10 hours with the lights set on maximum brightness - USB-C Charging Connection (Chargeable with a 5V—5.2V & 0.5A charger) - Remote included for turn Signal - Option to buy a Lumos Remote to activate Automated Brake Lights. (The Remote Lite included with Ultra doesn't come with an accelerometer and can only be used to activate turn signals) - Lumos Companion App: Customize your light flashing patterns, check your battery life, track your activity, and sync with Strava and Apple Health - Maximum Venting - MIPS technology Sizing: - Small: 51 – 55cm / 20 – 21.6" - Medium/Large: 54 – 61cm / 21.3 – 24" - X-Large: 61 – 65cm / 24 – 25.6"