Adults

A comfortable, versatile helmet with clean aesthetics and the added protection of Mips. - Mips safety system helps provide additional protection from rotational forces in the event of certain cycling-related accidents - Refined styling with removable visor easily transitions from road to trail - Large vents and recessed channeling keep you cool on warm days - Trek Headmaster 3 fit system provides simple and secure adjustability with just one hand - Soft, comfortable helmet pads wick moisture and are easy to wash after a full day of fun

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 WaveCel technology designed for riders who prioritize safety and require a fit designed for a rounder head. - WaveCel advanced helmet technology - 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, and moisture-wicking washable helmet pads - Round fit sizing designed to accommodate rounder head shapes - Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownership

An off-road helmet with WaveCel technology that balances comfort and performance for trail riders who value safety. - WaveCel advanced helmet technology - Virginia Tech 5 STAR safety rating - BOA® Fit system lets you easily secure and adjust your helmet with one hand - Adjustable visor offers multiple coverage options - LockDown dividers make helmet strap management clean and easy to adjust - Soft, comfortable, and moisture-wicking washable helmet pads

The Shadow Classic Helmet is constructed with a high-impact ABS hard shell with a light EPS core liner for even distribution of force upon impact. - ABS Hardshell construction with light EPS core liner - Includes two sets of padding for a custom fit - CE and CPSE certified - Shadow Crow Head rivets and Classic woven label - X-Small = 46 – 50cm - Small/Medium = 50 – 56cm - Large/X-Large = 56 – 61cm - XX-Large = 61 – 65cm

The Shadow Classic Helmet is constructed with a high-impact ABS hard shell with a light EPS core liner for even distribution of force upon impact. Two sets of our breathable foam pads ensure a custom fit for each rider's personal needs. Our 10 vent shell was designed to be lightweight and offer the rider great ventilation without compromising the helmet structure and durability. With such attention to detail, it's no surprise that the Classic helmets surpassed all EN and CPSC standards while being vigorously laboratory-tested to the highest possible degree. - ABS Hardshell construction with light EPS core liner - Shadow Crow Head rivets and Classic woven label - Adult sizes include 2 sets of padding for a custom fit - Surpasses all CE & CPSE Standards - Weight: 400 grams - Sizes: XS (46-50 cm), SM/MD (50-56 cm), LG/XL (56-61 cm), 2XL (61 65cm)

The FeatherWeight features In-Mold technology to make a custom shape and fit utilizing a thin outer shell that covers and protects high-density EPS foam. - High density EPS in-mold construction - Tested and certified for CPSC and EN 1078 standards for bicycle use - Two sets of padding included for custom fitting - Crow rivets and 10 flow-vents to keep cool - Small/Medium = 50 – 56cm - Large/X-Large = 58 – 61cm

Busy city streets and dim neighborhood roads, the Smith Express MIPS bike helmet is all-in when it's commuting time. The advanced angled impact protection of MIPS pairs with a clean, minimalist shape for a look that's cool and casual with the protection you want. Add the visor to help cut the glare, and adjust the fit with the turn of a dial. A pop-in rear light and reflective straps help boost visibility any time of day. PROTECTION: Lightweight in-mold construction, MIPS Brain Protection System reduces rotational forces caused by angled impacts to the head FIT / INTEGRATION: Adjustable dial fit for easy, on-the-go size adjustment FEATURES: 13 fixed vents for consistent airflow, Lightweight, low-bulk single layer webbing with reflective details, Removable fabric visor, Integrated removable rear vent light WEIGHT: (Size M, MIPS) 12oz / 330g CERTIFICATION: CPSC,CE EN 1078

The MET Downtown MIPS is a truly modern touring helmet, ready for a weekend trek or the daily bicycle lane. The internal air-channeling and large number of vents provide exceptional ventilation. The 360° head belt and lightweight design ensures that there will be no pressure points on the skull. Featuring the MIPS-C2 rotational management system, the Downtown is able to slide against the head in the case of a crash, redirecting damaging rotational motion. MIPS is engineered to add 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. - In-mold polycarbonate shell with EPS liner - MIPS-C2 Brain Protection System offers extra protection in the case of certain impacts - Safe-T Twist 2 Fit System - 360° head belt and vertical adjustments offer a customized fit - Straps with an adjustable divider provide a customized fit - Reflective rear decal to enhance visibility - 17 vents are internally engineered for air channeling to improve ventilation and comfort - Comfort pads are hand-washable - CE; AS/NZS; US Sizing: - Small/Medium = 52 – 58cm - Medium/Large = 58 – 61cm

MET Miles MIPS is a touring helmet with road spirit. It has a comfortable shape and plenty of vents to enhance air flow. Featuring the MIPS-C2 brain protection system, the Miles is able to slide against the head in the case of a crash, redirecting damaging rotational motion. MIPS is engineered to add 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 unique 360° head belt ensures that there will be no pressure points on the skull, allowing you to achieve the perfect fit. - In-mold polycarbonate shell with EPS liner - MIPS-C2 Brain Protection System offers extra protection in the case of certain impacts - Safe-T Twist 2 Fit System - 360° head belt and vertical adjustments offer a customized fit - Straps with an adjustable divider provide a customized fit - Reflective rear decal to enhance visibility - 18 vents are internally engineered for air channeling to improve ventilation and comfort - Comfort pads are hand-washable - Reflective rear decal - Certifications: CE; AS/NZS; US Sizing: - Small/Medium = 52 – 58cm - Medium/Large = 58 – 61cm

The MET Echo MIPS is an entry-level MTB helmet high in quality and protection. It’s a perfect choice for those who are just beginning their adventures on the trails. The construction of the helmet offers the same technology and safety, with increased coverage around the back of the head. Featuring the MIPS-C2 brain protection system, the Echo is able to slide against the head in the case of a crash, redirecting damaging rotational motion. - In-mold polycarbonate shell with EPS liner - Fully polycarbonate wrapped EPS liner enhances durability - Extended head coverage for more thorough head protection - MIPS-C2 Brain Protection System offers extra protection in the case of certain impacts - MET Safe-T Mid Fit System - The 360° head belt reduces pressure points on the perimeter of the head - The removable visor with hidden anchors ensures maximum versatility - Hand washable comfort pads - Straps with an adjustable divider provide a customized fit - 14 vents are internally engineered for air channeling to improve ventilation and comfort - Reflective rear sticker - Certifications CE; AS/NZS Sizing: - Small/Medium = 52 – 57cm - Medium/Large = 57 – 60cm - Large/X-Large = 60 – 64cm

The perfect lightweight helmet offers great head coverage for ultimate protection. This is a lot of helmet 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

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

All-day comfort with premium head and brain protection. The Leatt All-MTN 2.0 helmet has a lower rear shell, than its trail brother the Trail 2.0 helmet. This rear coverage offers greater protection for faster, more aggressive riders. Our helmets feature 360 ° Turbine Technology, the helmet is lined with turbines that 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. The helmet features low-speed ventilation ports and a Fidlock® magnetic buckle for easy fitting. You can conveniently store your sunglasses at the rear of the helmet as well. The visor is adjustable and breaks away upon impact for extra rotational impact force reduction. If you are looking for a multifunctional, lightweight helmet, then the 2.0 All MTN helmet is the helmet you want. Details: - Lightweight 2-piece polymer shell in three sizes - 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% - Adjustable visor with breakaway function for rotational impact force reduction - In-molded impact foam for superior energy absorption - Maximized ventilation with 20 vents effective even at low speeds - Moisture-wicking, breathable, anti-odor, and washable inner liner - Premium bottom trim for a quality finish - Weight: from 375g (0.83 lbs) - Certified and tested: AS/NZS 2063:2008, 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

Five steps up from your standard trail helmet! A lightweight all-purpose MTB helmet for trail riding, cross-country training, and backcountry or gravel adventures. This helmet is well-ventilated with maxiflow air channels and the Dri-Lex® liner is washable, moisture-wicking, anti-odor, and breathable. What is most important about the Leatt MTB 2.0 helmet is the head and brain protection level it offers. Featuring 360 Turbine Technology, the helmet is lined with turbines which are 360 °moving discs constructed from an energy-absorbing foam 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 the concussion level. Be comfortable and ride safely. Details: - Lightweight 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% - In-molded impact foam for great energy absorption - Maximized ventilation with 20 vents - Visor with breakaway function for rotational impact force reduction - Dri-Lex® moisture-wicking, breathable, anti-odor, and washable inner liner - Weight: from 300g (0.65 lbs) - Certified and tested: AS/NZS 2063:2008, EN1078, CPSC 1203

The Sphere MIPS delivers a perfect combination of great looks, all day comfort, performance and features to help protect in the event of an impact. You will look forward to every ride in the Lazer Sphere MIPS helmet. The ARS Fit System enables progressive fit adjustment via a thumbwheel. It distributes pressure evenly around the head, eliminating hot spots and pressure points. The adjustable head basket is ponytail friendly. Eighteen vents orientated at a 15-degree angle assures maximum airflow when the helmet is in the riding position. MIPS protection helps reduce the risk of rotational injury. A polycarbonate layer built inside the helmet keeps the foam together in the event of a crash, offering better protection from successive impacts. Sphere MIPS has been awarded the 5-Star "Best Available" protection rating from Virginia Tech. A docking area makes eyewear storage easy and bottom-shell protection helps prevent damage to the helmet foam. The optional Aeroshell accessory protects against the helmets or offers an aerodynamic benefit when desired. The Sphere MIPS weighs just 280 grams. WEIGHT: 280g (size small) MATERIAL: EPS Foam, Polycarbonate, Nylon FIT SYSTEM: Advanced Rollsys System (ARS) VENTILATION: 18 ROTATIONAL PROTECTION: MIPS CERTIFICATION: CPSC ACCESSORIES: Optional Aeroshell Sizing: - Small = 52 – 56cm - Medium = 55 – 59cm - Large = 58 – 61cm Features: Lazer Aeroshell compatible Multi use polycarbonate cover which fits over top of your helmet. It covers the front and side vents to protect your head from rain and cold or to gain an aerodynamic advantage. Adjustable Head Basket Allows the back part of the retention system to be adjusted up and down depending upon your preference and comfort. The nylon ratchet system can be pushed high and out of the way, or low for a feeling of increased security. Advanced Rollsys System (ARS) Easily adjust your helmet's fit by using the thumbwheel on the top of the helmet. Lazer's unique fit system prevents hotspots or pressure points by making the adjustment around the entire circumference of the head. MIPS layer The Multi-Directional Impact Protection System (MIPS) helps reduce the risk of rotational brain injury by isolating your head from the rotation of the helmet shell in the event of an impact. 5-star protection rating The Virginia Tech impact testing uses the STAR evaluation system to determine the helmet's ability to reduce linear acceleration and rotational velocity of the head resulting from a range of impacts a cyclist might experience. 5-star indicates the "Best Available" rating possible. Virginia Tech recommends the use of any 4- or 5-star rated helmet. Well ventilated Carefully designed vents and internal channeling pull air into the helmet and across your head for increased airflow. Essential for performance and comfort during high temperatures and hard efforts.

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

We love what's inside of that head of yours Keep it safe with an Electra Commute MIPS Helmet. The perfect balance of form and function, these stylish and sleek helmets are our most advanced yet. MIPS (Multi-directional Impact Protection System) was developed by brain surgeons and scientists to help reduce rotational forces on the brain caused by angled impacts to the head. Electra helmets: Making messy hair business professional. - MIPS Brain Protection System - Fit retention system ensures easy adjustment and secure fit - Magnetic Fidlock slide buckle - In mold EPS with PC shell for maximum comfort and protection - Certified to NTA 8776 standard and is ideal for e-bike riders

We love what's inside of that head of yours. Keep it safe with an Electra Commute MIPS Helmet. The perfect balance of form and function, these stylish and sleek helmets are our most advanced yet. MIPS (Multi-directional Impact Protection System) was developed by brain surgeons and scientists to help reduce rotational forces on the brain caused by angled impacts to the head. Electra helmets: Making messy hair business professional. - MIPS Brain Protection System - Fit retention system ensures easy adjustment and secure fit - Magnetic Fidlock slide buckle - In mold EPS with PC shell for maximum comfort and protection - Certified to NTA 8776 standard and is ideal for e-bike riders - Fit System: HB-80 - Pad Material: Moisture-wicking pads - Buckle Type: Fidlock buckle - Includes: Fabric visor

Capable coverage, comfortable protection Find the perfect fit in a stylish lid. Starvos offers protection, airflow management, and comfort in a wide range of color options. It comfortably fits a wide range of head sizes, allowing you to find the right fit every time. Product details - In-mold composite skeleton increases helmet integrity and larger vent variations - Intuitive, one-handed Headmaster fit system adjusts height and circumference - Soft, comfortable, moisture-wicking, and washable helmet pads - FlatLock dividers make helmet strap management simple through fixed position fit - Internal, recessed channels manage airflow through the helmet and over the head - Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownership

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)

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

Ultra-versatile helmet that is light, cool, and sleek with the added protection of MIPS and the convenience of magnetic light mounts. If you could only buy one helmet, this is the one. Whether your finish line is on the race course or to the front door of your destination the Bontrager Circuit MIPS road helmet will deliver. Equipped will all the best features including MIPS brain protection system, Boa fit system for superior comfort and security, and the Blendr mount system for light and camera integration. 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 - Blendr mount system easily integrates GoPro camera and Bontrager lights accessories - The Boa System lets riders easily secure and adjusts helmet fit with one hand - In-mold composite skeleton increases helmet integrity for larger vent variations - AgION antimicrobial pads wick moisture and completely eliminate odors naturally - LockDown dividers make helmet strap management clean and are easy to adjust - Internal, recessed channels move airflow over your head to stay cool and dry - Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownership

Bontrager Charge WaveCel Commuter is a fashion-forward helmet that earns top marks in style and safety. It’s perfect for commutes, e-bike rides, and everyday adventures, and it's built with the most advanced helmet safety tech available so you don’t have to choose between fashion and function. 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 - Rear Blendr mount system easily integrates Bontrager light accessories - Soft, comfortable, moisture-wicking, and washable helmet pads - Built-in visor provides constant coverage against sun and rain - 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

An off-road helmet with WaveCel technology that balances comfort and performance for trail riders who value safety. 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 the industry has accepted for over 30 years. 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 - Extended back-of-helmet shell offers additional rear protection - LockDown dividers make helmet strap management clean and easy to adjust - Soft, comfortable, moisture-wicking, and washable helmet pads - 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) - Fit system: Boa - Pad material: Moisture-wicking pads - Buckle type: Standard buckle - Includes: Crash Replacement Guarantee - Weight: 360g (Small) / 400g (Medium) / 430g (Large)

- 15% lighter than the classic Macon - Increased protection due to the Ribbed EPS liner - Multisport configuration - Construction—Thin shell - EZ-Fit System - Compatible with Bern Asteroid Light - Adjustable strap divider - Compression-molded pads - Visor compatible - Average weight: 376g - MIPS: multi-directional Impact Protection System - 12 vents Helmet sizing: - Small: 52 - 55.5cm - Medium: 55.5 - 59cm - Large: 59 - 62cm

- Compass fit - 11 vents with increased air flow - Compatible with click-mount light - Lightweight - Integrated brim - Lay flat strap dividers - Compression molded pads - Light & durable dual shell - Snowsport knit compatible - Average weight: 350g Sizing: - Small = 52 – 55.5cm - Medium = 55.5 – 59cm

- Compass fit - 11 vents with increased airflow - Compatible with click-mount light - Lightweight - Integrated brim - Lay flat strap dividers - Compression-molded pads - Light & durable dual shell - Snowsport knit compatible - Average weight: 350g - Helmet sizing in cm: 59 - 62cm

- Zip Mold + construction - EZ-Fit retention system - 13 vents - Bike light compatible - Removable flip visor - CPSC standards EN1078 Helmet sizing: - Small: 52 - 55.5cm - Medium: 55.5 - 59cm - Large: 59 - 62cm