Helmets

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)

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

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)

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

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 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

The gnome protects your dome. Helmets don't have to be boring. Fortunately, boring isn't in our vocabulary. Choose between awesome colors and graphics that fit your style. Electra helmets: Making messy hair cool since 2016. - Durable ABS hardshell for protection and EPS foam liner for security - 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 7 3/8 - 7 5/8 - Small size generally fits children while medium and large sizes fit adults - Fit System: HB-80 - Pad Material: Moisture-wicking pads - Buckle Type: Fidlock buckle - Includes: Fabric visor

Ride smart. It's a no brainer. If you're going to rock a helmet on an Electra, rock an Electra on your helmet. Choose between awesome colors and graphics that fit your style. Electra helmets: Making messy hair cool since 2016. - Durable ABS hardshell for protection and EPS foam liner for security - 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 7 3/8 - 7 5/8 - Small size generally fits children while medium and large sizes fit adults - Fit System: HB-80 - Pad Material: Moisture-wicking pads - Buckle Type: Standard buckle

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

Ride smart. It's a no brainer. Helmets don't have to be boring. Fortunately, boring isn't in our vocabulary. Choose between awesome colors and graphics that fit your style. Electra helmets: Making messy hair cool since 2016. - Durable ABS hardshell for protection and EPS foam liner for security - Safety, comfort and function for all riders - Complies with U.S. CPSC safety standards for bicycle helmets for persons age 5 and over.

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

The Flight Helmet takes the traditional dirt-jump lid to all-new levels of protection, performance, and comfort. The M9 Multi-Sector liner uses 9 distinct segments for improved fit, comfort, and superior breathability. Additionally, it is made using our proprietary Varizorb Multi Density EPS foam which absorbs, disperses and reduces the force of impact to the head in crashes. - Dirt-jump and trail-specific functionality - M9 segmented EPS design for improved fit, flexibility, and comfort - Varizorb multi-density EPS liner provides improved protection - Thin ABS shell for reduced weight - 8 large Big Bore vents for increased airflow and lighter weight - 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

Key Features: - Mips® equipped - Virginia Tech 5-Star helmet rating - Goggle-compatible, 3-position visor - 360° Fit System to dial in fit - Fast and simple FIDLOCK magnetic buckle Performance-focused open-face trail helmet The Speedframe Pro Blocked Helmet 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. 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 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

Maximum coverage open-face mountain bike helmet. The Dropframe Pro Helmet is a game-changing, open-faced 3/4 enduro helmet. It features Mips®, the BOA® fit system for class-leading fit and security, increased ventilation, plus an ionic+® anti-microbial liner and cheek pads to optimize fit. With its 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. Key Features and Specifications: - BOA® fit system for class-leading fit and security - 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 - Big Bore front vents include eyewear storage recess - Increased ventilation and decreased surface contact area improve cooling - Ionic+® anti-microbial liner and cheek pads to optimize fit - Fidlock magnetic closure Meets the NTA-8776 E-bike helmet certification standard Note: Avoid exposure to aerosol sprays like bug repellent and sunscreens as they can cause your helmet's finish to peel Materials: 30% EPS, 11% EVA, 10% polycarbonate, 13% nylon, 11% Pom, 14% Tpee

You need to get out on your bike even in terrible weather. Fitting in an early commute or a mid-winter ride is easier when you're warm, comfortable, and visible. Keeping your head warm in bad weather can be the best way to fend off the elements. - GORE-TEX Product: durably waterproof, windproof and extremely breathable - Reflective band - Elastic hem - Reflective logo - Durably waterproof - Extremely breathable - All weather conditions - Engineered for Cycling - Weight: 0.8 ounces

The Roc Loc 5 Led Light is one of the easiest and most powerful ways to increase visibility and safety on the road.

The Caden MIPS II offers a sophisticated style with advanced head protection technology, making it a perfect match for your on-the-go lifestyle. A sleek In-Mold shell helps keep Caden lightweight, and the Roc Loc City MIPS fit system makes fit and feel adjustments almost effortless. Inside the helmet, MIPS technology can help to reduce rotational forces to provide more protection in certain impacts. Thoughtful details include reflective accents, a lock port for securing the helmet with your bike or a bag when you're on the move, and a TPU cycling cap-style visor that accents your style without compromising ventilation.

When it's time to hit the road, the Agilis MIPS offers a sporty, sleek style with comfortable features you can count on, including 32 wind tunnel vents, Coolfit anti-microbial padding, and integrated MIPS technology. The fit on the Agilis MIPS is comfortable and secure thanks to our adjustable Roc Loc 5.5 MIPS system that combines fit and positioning adjustments while integrating with MIPS technology for an added measure of protection in the event of an angled impact. The outer Hardbody shell extends to the inside of the helmet, and is molded from a tough polycarbonate thats fused permanently to the EPS foam liner using our In-Mold process to enhance durability and ventilation without excess bulk. - 32 Wind tunnel vents with internal channeling - Full-wrap in-mold polycarbonate shell with EPS liner - Coolfit anti-microbial padding - Featherweight webbing with Slimline buckle - Roc Loc 5.5 MIPS fit system

The Agilis W MIPS offers assured style and performance for women, with a sleek silhouette, airy design, and MIPS technology. The Agilis MIPS W is the right choice for women looking for a helmet that combines airy design with slightly deeper coverage and a host of performance features aimed at road and multi-surface riding. The fit is comfortable and secure thanks to our adjustable Roc Loc 5.5 MIPS system that combines fit and positioning adjustments while integrating with MIPS technology for an added measure of protection in the event of an angled impact. The outer Hardbody shell extends to the inside of the helmet, and is molded from a tough polycarbonate that's fused permanently to the EPS foam liner using our In-Mold process to enhance durability and ventilation without excess bulk. The fit is comfortable and secure thanks to our adjustable Roc Loc 5.5 MIPS system that combines fit and positioning adjustments while integrating with MIPS technology for an added measure of protection in the event of an angled impact. The outer Hardbody shell extends to the inside of the helmet, and is molded from a tough polycarbonate that's fused permanently to the EPS foam liner using our In-Mold process to enhance durability and ventilation without excess bulk. Specs: - Impact Management: Integrated MIPS - Construction: In-mold construction, Four-piece Polycarbonate Interlocking Hardbody Shell, Full Hardbody Wrap - Ventilation:Wind tunnel vents with internal channeling - Fit System: Roc Loc 5.5 MIPS - Weight: 300g (Size Medium CPSC); 280g (Size Medium CE) - Certification: Complies with the US CPSC Safety Standard for bicycle helmet for persons age 5 and older E.U.: CE EN1078

Leading features plus graphic options that coordinate with the Giro Women's Road Collection make the Ember MIPS the pinnacle of style on the road. The Ember MIPS helmet provides all the features an avid road rider wants in a lightweight package. The design is inspired by the classic aesthetic of our premium Synthe helmet, offering similar performance and style. It features the Roc Loc 5 fit system, which allows you to easily dial-in both fit tension and adjust vertical position with a single hand as well as Air-FX padding for comfort on your longest rides. The Ember MIPS helmet is also equipped with MIPS to redirect impact energy, providing more protection in certain impacts. Specs: - Integrated MIPS - Construction: Thermoformed SL roll cage reinforcement, Compact shape - Ventilation: Wind tunnel vents with internal channeling - Fit System: Roc Loc 5 - Certification: Complies with the US CPSC Safety Standard for bicycle helmet for persons age 5 and older E.U.: CE EN1078 - Highlights: Quick dry padding, Slimline webbing

The Giro Cinder MIPS provides all the features an avid road rider wants in a lightweight package. The design is inspired by the classic aesthetic of their premium Synthe helmet, offering similar performance and style. Key features include the Roc Loc 5 fit system, which allows you to easily dial in fit tension and adjust vertical position with a single hand. Air-FX padding offers comfort on your longest rides, and the helmet is equipped with MIPS to redirect impact energy, providing more protection in certain impacts.

The Eclipse Spherical is both the fastest road helmet and the coolest aero road helmet Giro has ever created, bringing our best technologies together in a light, compact form that's ideal for road and gravel racing. The sleek outer shell actively streamlines airflow to reduce drag across multiple wind angles, while 14 Wind Tunnel vents pull air through the helmet to provide incredible cooling power that rivals our most aggressively vented road helmets. Inside, the ball-and-socket design of Spherical Technology is powered by the MIPS brain protection system, which allows the helmet's outer EPS foam liner to rotate around the inner foam liner during a crash to help redirect impact forces away from the brain. Progressive Layering of both the inner and outer liners help to offer more comprehensive protection, too. The patented Roc Loc 5 Air system enhances stability and fit, and plush antimicrobial Ionic+ padding helps absorb sweat and moisture while providing durable antimicrobial performance.

A lightweight in-mold design with built-in front and rear LED lights and remote handlebar-activated turn signals is the perfect accessory for the daily commute through the urban jungle. STANDOUT STYLE WITH BOLD VISIBILITY Choose to ride, choose to be seen. The Ethos™ Mips® is a revolution in transportation, with a compact and stylish form featuring the added protection of Mips® Brain Protection System highlighted by integrated LED front white lights, rear red lights, and amber turn signals, all controlled via an intuitive handlebar remote. The entire system is USB-C rechargeable with an estimated run time of 10 hours in low-blink mode and 5 hours in the high-blink mode, which delivers 45 lumens front and 30 lumens rear. Helmet and remote can be fully charged in just 2 hours and 1 hour, respectively. The Ethos Mips features a TPU soft rubber waterproof brim. (The Ethos Mips also is available with a clear, molded eye shield as the Ethos Mips Shield). Despite the added technology, in-mold construction keeps the weight manageable, full hardbody coverage adds durability, and a Roc Loc® City Mips fit system plus quick-dry padding ensure comfort. Whether you're a dedicated bike commuter, running the kids to school on your e-cargo bike, or simply looking for added visibility as you ride around town, the Ethos Mips is a look into the future. Highlights: - Built-in front (white) and rear (red) LEDs - Handlebar-activated turn signals (amber/yellow) - Micro-USB C rechargeable - Deep coverage - Quick-dry padding

With aggressive venting to keep you cool, this helmet is packed with features in a deep-coverage design. The Lunati exceeds CE EN 1078 / CPSC 1203, fits likes a dream, and is ready for any off-road adventure. - Break-Away Moto Style Visor - Removable/Washable Liner - Anti-Microbial Pads/Bug Liner - Locking Buckle & Sliders - Micro-Fit Closure System - Compatible with Kali accessory mount Material: - PC Shell - EPS Foam Certifications: - CPSC - EN 1078 Sizing: - Small/Medium = 55 – 61cm - Large/X-Large = 60 – 63cm

The Kali Grit Helmet is designed for performance road cycling. It features a Rheon Low-Density Layer (LDL) to protect you in the case of low-G linear or rotational impacts, and Kali's proprietary Supervents to increase overall strength and help with ventilation. The Grit also features the Frequency Fit System, with vertical adjust and dial retention, Fixed Strap Intersections, Unibody Construction and a Rollcage Internal PC Bridge, for added strength. - Rheon Low-Density Layer (LDL) reduces rotational impact forces up to 25% and reduces low-g linear forces up to 30% - Supervent: injection molded skeletal structure for added strength and larger volume intake vents - Frequency Fit System, with dial and vertical adjust offers three positions for maximum comfort and fit - Fixed Strap Intersections: Stops the straps from twisting, while keeping them flush against your face - Unibody Construction: Couples the upper and lower shells for a dialed fit and finish, while adding strength - Rollcage Internal PC Bridge: Used to increases the overall strength of the helmet

OFF ROAD STYLE The new MTB helmet from Lazer! Top-end performance at a great price. The color-matched and fully integrated visor looks great and keeps sun out of the eyes and off the face. 15 vents keep the interior cool on those long single track climbs. The TS+ retention system with Adjustable Head Basket allows for a secure and easy-to-adjust helmet and delivers a perfect fit for every ride. The integrated low-friction MIPS layer adds additional protection against rotational impacts. - Increased protection - Visor - Turnfit Plus system - MIPS layer - Fit System: Turnfit Plus system - Construction: In-Mold - Ventilation: 15 vents - Weight: 305g (S) - Certification: CE-CPSC-AS

The Chiru MIPS lets you push your limits mountain biking without sacrifice. A low friction MIPS layer and deep coverage at the sides and rear of the helmet helps protect your head against unexpected knocks. The Chiru MIPS pairs extended coverage with a MIPS layer to give you excellent protection. Chiru MIPS has been awarded the Virginia Tech 5-Star "Best Available" protection rating. Stay comfortable on all-day epics: the Turnfit+ System retention system will keep your helmet secure while eliminating pressure points. A color-matched integrated visor will help prevent squinting, so you can keep shredding on the sunny days. Fifteen well-placed air vents promote airflow even on slow, technical climbs. The optional rechargeable rear TS+ LED light will come in handy when you ride until dark and still need to pedal home from the trails. Sizing: - Small = 52 – 56cm - Medium = 55 – 59cm - Large = 58 – 61cm

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.