Best Adjustable Bike Helmets in 2026

A HELMET YOU’LL WANT TO WEAR: Our founder created the first ever stylish bike helmet to keep people who bike and skate safe, while expressing their personal style. She designed a functional and lightweight helmet that doesn’t sacrifice style for safety.

LOCK YOUR HELMET WITH YOUR BIKE: Our patent-pending PopLock is the most convenient way to leave your bicycle helmet behind. Access the hidden channel behind the logo mark, and pop your U-Lock or chain lock through. Perfect for the daily commuter.

GET THE PERFECT FIT: Refer to the fit guide in the images to find the correct size. Tighten or loosen your bicycle helmet with our Dial Fit System in the back of your helmet to get the perfect fit for every ride. Doesn’t fit? Contact us!

Various colors and sizes for users of different ages, genders, head circumferences,multi-sports activities.Available for Person Age 5 and Older,and suggestion: S Size for toddler / kid

High hardness ABS outer shell resists impact and high density EPS inner shell provides shock-absorbing,very safety and durable

Removable foam padding adopt breathable liner heat pressing cotton,special aerodynamic design ,12 air cooling vents to keep the head cool

MARKET-LEADING SAFETY: Engineered in Giro’s category-leading helmet test lab

MIPS: Utilizes the Multi-Directional Impact Protection System to redirect energy in a crash

COMFORT: Easily adjust vertical position and tension with the Roc Loc 5.5 fit system

Made for Great Days on the Bike: Whether you’re hitting the road for the day or just facing the daily commute, the Smith Signal helmet gives you the protection you need no matter where your wheels take you

Your Protection at its Core: Our Signal helmet features the MIPS Safety Protection System and is CPSC & CE EN 1078 certified

Stay Cool & Eliminate Foggy Lenses: With 21 fixed vents for consistent airflow and the AirEvac system to integrate with Smith eyewear, you’ll stay cool and your glasses will stay clear

Tailor Made for Your Head: The Convoy was designed to be a helmet that ticks all the boxes, with lightweight protection, a fixed visor, a comfortable fit, and all the ventilation you need for even the hottest days on the trail

Your Protection at its Core: This helmet features the MIPS Safety Protection System and is CPSC & CE EN 1078 certified

Stay Cool & Eliminate Foggy Lenses: With 20 fixed vents for consistent airflow and the AirEvac system to integrate with Smith eyewear, you’ll stay cool and your glasses will stay clear

Rechargeable Helmet Light: VICTGOAL bike helmet included plug-in USB rechargeable LED light, 3 Lighting Modes-steady, fast flashing and slow flashing, will help riders behind you clearly recognized your direction. The bike helmet light only takes two hours to charge and can be used for 10 hours.

Cool and Lightweight Cycling Helmet: Our bike helmet is design with 21 breathable vents, can effectively reduce air resistance and make you feel cool when cycling. The cycling helmet only 310g (0.68 lb) will not cause any burden to the rider's head during cycling.

Impact Resistance: This bicycle helmet is made of high-density PC shell and EPS foam, with durable hard shell and soft pad can absorb the pressure caused by external impact. Our bike helmet will make you feel comfortable and protect you in all directions.

HIGH PERFORMANCE QUALITY: CE Marked (European Standard) and CPSC Approved (American National Standard). The Zacro Bike Helmet is carefully constructed with an all-in-one polycarbonate solid PC shell and high-density shock-absorbing EPS foam, giving it excellent shock absorption and drop resistance.

DESIGNED FOR MAXIMUM COMFORT: With a special aerodynamic design, 18 vents circulate air, keeping your head cool and dry in hot conditions.

REMOVABLE INNER PAD AND VISOR: The visor comes with an adult bike helmet that can be easily and securely removed to help keep the sun out of your eyes and prevent rain from getting into your eyes while riding. The wrap-around padding increases comfort and is easy to clean as it is removable.

SAFETY - This GROTTICO bike helmet meets US & EU cycling standards.

ADJUSTABLE DIAL & STRAPS - The adjustable fit system for men and women. 2 sizes for choice, suggested head circumference: M (55-58CM), L (59-61CM)

INTEGRATED SAFETY REAR LIGHT - Bicycle helmet with USB rechargeable light. Best for night riding with 3 lighting modes, Steady, Flash and Wave.

Its Rugged ABS Shell and shock-absorbing EPS foam effectively reduce the impact of any potential falls, providing essential protection to keep wearer safe from bumps and bruises. Complies with U.S. Consumer Product Safety Commission Safety Standard for Bicycle Helmets for Persons Age 5 and Older.

3 sizes, Small (51-54 cm/ 20.0-21.3 in.) for baby toddler and children. Medium (55-58 cm/ 21.6-22.9 in.) for youth teenager and adults. Large (59-61 cm/ 23.2-24.0 in.) for adults. Various colors for men, women, boys, girls and babies. Please choose the helmet size according to the head circumference.

This classic bike & skateboard helmet is perfect for a variety of outdoor activities, including biking, skateboarding, roller skating, scooter rollerblade, longboard, hoverboard.

LIGHT FULL FACE helmet. MIPS, EPP (slow speed), EPS (high speed) coverage. 690 grams

EFFICIENT VENTILATION SYSTEM to keep you cool. 25 high-flow intake & exhaust ports for high airflow

3 YEAR WARRANTY. Includes bag with breathable mesh paneling. FIDLOCK magnetic buckle system.

MARKET-LEADING PROTECTION: Engineered in Giro’s category-leading helmet test lab.

MIPS: Utilizes the Multi-Directional Impact Protection System to redirect energy in a crash.

COMFORT: Easily adjust vertical position and tension with the Roc Loc 5.5 fit system.

MARKET-LEADING PERFORMANCE AND PROTECTION: Engineered in Giro’s helmet test lab.

INTEGRATED MIPS: MIPS Brain System is integrated with the Roc Loc 5 Air Fit System for an added measure of protection in certain impacts plus market-leading fit and comfort.

LIGHTWEIGHT AND DURABLE: In-molding construction eliminates excess weight and permanently fuses tough polycarbonate outer shell to the interior liner.

Complies with the U.S. Safety Standard. It is made of sturdy PC shell and high quality EPS foam, providing more protection for the cyclist.

2 sizes are available: L, 58-61 cm (22.8-24.0 inch) for adult; M, 54-58 cm (21.3-22.8 inch) for kids age 5 and older. Please choosing the helmet size according to the head circumference.

The adjustable dial and strap can be easily adjusted to achieve a custom fit. Besides, there is a insect net attached on the front of the helmet. Suitable for road / mountain cycling and other biking activities.

【High Safety Protection】Basecamp bike helmet meets US cycling standard. With superior in-molding technology, bicycle helmet made of high-density PC shell and EPS foam is helpful to absorb and decrease the pressure caused by external impact forces, and protect your head in all directions during crash. Adults wear our bike helmet will feel Safer and more comfortable.

【Bike Helmet with Bright Rear Light】Mountain bike helmet rare light with 3 lighting modes - steady, slow flashing and fast flashing, keeps you safe and shine in night cycling. It will warn the cars and help riders behind you clearly recognize your direction, providing the highest and best possible protection and visibility on the city streets. An extra spare battery is also included.

【Bicycle Helmet with Detachable Magnetic Visor】Bike helmet visor with with 3 strong magnets, can be used as a sunglasses, not only protect your eyes against wind and sand, but also block the strong sunlight, UV400 protection. It won’t interfere with wearing your own glasses. Bike helmet men women meets your 3 wearing needs-goggles up, goggles down and no goggles, fit for mountain bike and road bike cycling.

PROTECTIVE: This bike helmet has a durable ABS shell and dense EPS foam interior to keep you safe. Stay seen on the bike path with fully adjustable, reflective nylon chin straps. Remi's full perimeter, rubber edge guard protects the helmet from chipping.

COOLING: Stay cool with 11 breathable vents and channeled interior for optimal airflow in and around your bike helmet. Don't sweat it on super hot days. This bicycle helmet's interior pads are removable, washable and quick-drying.

COMFORTABLE: Nothing's weighing you down. This lightweight helmet is designed with a cushioned interior, chin padding, and an additional thick pad set so you can fine tune your fit.

SAFETY - This PHZ. adult mountain helmet meets US & EU cycling standards.

ADJUSTABLE DIAL & STRAPS - The adjustable fit system for men and women. 2 sizes for choice, suggested head circumference: M (55-58CM), L (59-61CM)

INTEGRATED SAFETY REAR LIGHT - Mountain helmet with detachable USB rechargeable light. Best for night riding with 3 lighting modes, Steady, Flash and Wave.

【Excellent Safety Protection】Bike helmet men women with in-molding technology joins thick EPS foam and outer PC shell to absorb and decrease the pressure caused by external impact forces during crash, giving you the maximum protection in all directions when road cycling or mountain biking.

【USB Rear Light&Reflective Sticker】USB light with 3 modes-steady, slow flashing, fast flashing and reflective sticker on the back of the bicycle helmet warn cars and help riders behind you clearly recognized your direction, which guarantees the highest protection and visibility on city roads, safer in night cycling. USB light is fully charged in just 2 hours and last for 10 hours. Extra USB cable is also included.

【Removable Magnetic Goggles UV Protective】Bicycle helmet with a unique magnetic goggles visor shield provides eye protection and blocks the sun and dust perfectly away from your face, UV 400. Your own glasses also can be worn under bike helmet goggles. A helmet meets your 3 wearing needs-goggles up, goggles down and no goggles. Your style bike helmet is designed by yourself.

★🎁 SUITABLE SIZE: 🎅This bike helmet have 2 size for Age 2 and older.Suit for toddler/kids/youth/adult/teenager.Small size is 18.9'' - 21.26''.Medium size is 21.26' - 22.4''.Large size is 22.4"- 24".Measure the circumference slightly above eye brows to ensure you choose the correct size.NOTE:If you have any questions please contact us as soon as possible,we will try our best to solve your problem and give you a satisfactory reply.

★🎁 SAFETY PROTECTION: 🎅The bike helmet use sturdy ABS outer shell and EPS foam inner can absorb external pressure in sporting activities,it can reduce your child risk of injury when biking on,rollerblading or playing.Make you kids more happy on play.

★🎁 ADJUSTABLE STRAPS AND LIGHTWEIGHT: 🎅The kids bike helmets equipped with adjustable straps and spin dial to ensure you achieve a better fit.The spin dial on the back of helmet and chin straps can be adjustable according to your kid’s head circumference.The quick-release clip keeps the helmet securely in place without risk of face scratches or abrasions.

CERTIFIED SAFETY. This helmet has undergone intensive safety tests. It fully complies with CPSC safety standards. The ABS hard shell and impact-absorbing EPS foam liner provide superior protection from the inside out.

VENTILATION. 12 vents strategically placed at front, top and back to maximize airflow and keep you cool even during intense activities.

SIZE ADJUSTABLE. Rotating the size adjustment dial, you can always get a snug fit no matter what your head shape is. Comes in 2 sizes, S/M for head circumference 21.25”-22.25” (54cm -57cm). L for head size 22.25”-23.75” (57cm -60cm). 2 sets of replacement pads provided for a custom fit.

Enhance your cycling identity - Choose Lumos Kickstart, the smart helmet designed for those who prioritize safety, technology, and style in their cycling adventures. Stand out among fellow cycling enthusiasts and embrace the cutting-edge features that will elevate your road biking and e-biking experience while providing exceptional visibility and protection.

Enjoy effortless communication on the road - Integrated bike turn signals controlled by a wireless handlebar-mounted remote make your cycling experience safer and more enjoyable. Connect the Lumos Kickstart to our app for seamless LED pattern customization, brightness adjustments, Team Sync feature, and ride tracking. Experience up to 10 hours of battery life and convenient magnetic charging.

Prioritize safety with MIPS head protection - Benefit from the advanced safety of the Multi-Directional Impact Protection System (MIPS), a sophisticated design that helps protect your head by allowing the helmet to absorb rotational impact force during your rides and commutes.

CLASSIC & VINTAGE URBAN STYLE - It is specialized designs for the urban commuting, bikes cycling and suitable for city, road, electric, trek bike and etc.Pick from a variety of matte colors to perfectly accent your bike and augment your personality.

SAFETY - BASE CAMP bike helmets are dual safety certified,meets US & EU cycling standards.The construction of the A19 traditional style bicycle helmet is integrated polycarbonate shell with EPS liner,manages the energy from impacts effectively and offering tremendous protection.

SIZE ADJUSTMENT SYSTEM - Adult helmet suitable for most adults head circumference from 22 to 23.6 inches. The easy dial adjustable fit system lets you fine-tune the way the helmet, fits men, women and youth.The soft padding under the chin-strap clasp prevents pinching or rubbing.

IMPACT RESISTANCE: Made from a high-density PC shell and EPS foam, this bike helmet has a durable hard shell and soft pad that absorbs pressure from external impacts, minimizing the risk of head injury in the event of a crash. Our bike helmets will keep you comfortable and protect you from all angles.

LIGHTWEIGHT & BREATHABLE: The bicycle helmet adopts a special aerodynamic design and 22 ventilation holes, which effectively reduce air resistance and sweat. Weighing only 281 grams, the helmet puts no pressure on your head at all, and cooling vents move airflow for city riding or complex road and mountain biking.

MAGNETIC HELMET GOGGLES AND VISOR: This bicycle helmet with goggles and removable visor is suitable for mountain biking and road biking. Put together goggles and a face shield to protect not only your eyes from the sun, but your face from wind, sand and dust

An extra layer of safety - Take your bike helmet to a new level with bright front and rear LED lights, making you visible to vehicles from all angles. The Lumos Ultra is the most backed Kickstarter project in the "bike" category as well as the most funded in the "bike accessories" category.

Turning Left or Right? - The bright helmet LED lights lets those behind you know which way you are turning, controlled by the wireless handlebar-mounted remote.

Gift your cyclist buddy - The Lumos Ultra is guaranteed to draw a huge smile on any rider. You would not want another helmet after riding with the Lumos Ultra.

☞1:CERTIFIED SAFETY: Passed CPSC 1203 & ASTM 1492.INNAMOTO Skateboard Helmet/Bike helmet has undergone intensive safety tests.Our Scooter Helmet fully formed ABS outer shell resists impact and high density EPS inner shell provides thickened shock to keep you safe.

☞2:INTERNAL TIGHTENING MECHANISM:Our bike helmet/skate helmets comes with a dial which can adjust the internal size and also come with an adjustable strap which make it flexible to fit the size of adult,boys and girls.Size Chart :Small:（kids/youth） 51-54cm / 20"-21.2", Medium:（women） 54-58cm / 21.2"-22.8", Large:（men）58-61cm / 22.8"-24", Please refer to the size chart for details.

☞3:MULTI-SPORTING GEAR: These bike helmet/skating helmets are flexible and suitable for Multi-sports activities, include cycing skateboarding, scootering, inline,roller skating,BMX, MTB.These helmets would be the essential protective gear for any outdoor sports-lovers.

Two reinforced layers: strong ABS shell resists impact and high quality EPS foam provides shock-absorbing. Complies with U.S. Consumer Product Safety Commission Safety Standard for Bicycle Helmets for Persons Age 5 and Older.

3 Sizes. Large is for adult, men and women. Please choose the helmet size according to the head circumference.

Suitable for various outdoor sports such as biking, skateboarding, skating, scooter, rollerblade, longboard, hoverboard and so on.

【Impact Resistant Bike Helmet】Basecamp bike helmet meets US & EU cycling standards. In-molding technology joins thick EPS foam core and durable high density PC outer shell to ensure this bicycle helmet absorb the impact force in the crash and keep your head safe when road cycling or mountain biking.

【Bicycle Helmet with Detachable Taillight】Bike helmets for men women comes with led back light in the shape of diamond. 3 lighting modes (steady, slow flashing and fast flashing) help people behind you recognized your direction clearly, and provide max visibility and safety while night riding on the city streets. Extra back-up battery is also included.

【Cycling Helmet with Sun Visor】Adult bike helmets with special design of sun visor shield provides shade when biking, making you reduce glare and increase your field of vision, so that you can enjoy cycling even in hot days, and you can take the visor off when you don't want it. A portable helmet backpack is convenient for you carry it.

SAFETY: Our Bike Helmets Complies with U.S. CPSC,EU CE Safety Standard for Bicycle Helmets for Persons Age 5 and Older,Equip with 3 modes Helmet Led Rear light for Night or Morning Riding Safety(Lighting Models:Always On, Fast Flash, Slow Flash) (NOTE;if it does not work please contact us we will help you solve the problem)

IN-MOLD CONSTRUCTION ULTRA LIGHTWEIGHT: In-mold construction fuzes a tough polycarbonate outer shell with the helmet’s impact-absorbing foam liner.In-mold helmets can be lighter and cooler than traditional helmets, It very comfortable to wear

AMPLE VENTILATION: Comfortable pad and 24 Vents keep Ample Ventilation for ultimate temperature regulation and reducing resistance, It makes your road, recreational or commute riding more effortless, and come with Visor protect your from sun

The Rebel Warrior Motorcycle Half Helmet for Men & Women by Vega Helmets is the ideal motorcycle helmet for those looking for a more comfortable stylish helmet with its small, lightweight, custom-fit, and feature packed design.

OPTICALLY CORRECT DROP DOWN SUNSHIELD – Protect your eyes from sun, bugs, and debris while enjoying the sights with the easy to use, optically correct, drop down inner sun shield on the Warrior half face helmet.

FEATURE-LOADED – The Rebel Warrior skull cap helmet features a NEW size-adjustment dial system for the perfect custom fit for your head, an advanced moisture wicking liner, channeled EPS for increased cooling & safety, and padded quick-release strap.

【DOT Certified for Safety】: Dual Sport Helmet meets the safety standard requirements of DOT FMVSS-218 / ECE R2205,which meets or exceeds DOT safety standards to ensure your safety. ATV Helmet features advanced flip up design that enables you to get more air without taking the whole helmet off.

【Reliable High Quality】: Lightweight and durable ABS shell with high pressure thermoplastic technology . The interior of the Motocross Helmet is made of high density EPS foam, which can be used as a buffer layer and has a strong cushioning effect.

【Ventilation System】: Air circulation is more comfortable, multiple vents can easily solve the heat problem, and the light airflow helps the driver to stay cool and comfortable. Aerodynamic design reduces noise. Street Bike Helmets has a streamlined design to reduce drag and make riding more effortless.

MAXIMUN VENTING SYSTEM- The Corvair mountain bike helmets for men and women is engineered for hot days and uphill climbs, with 17 VENTS and a unique interior channel system, air flows freely around your head without sacrificing head protection.

FINE TUNE ADJUSTMENTS- The Corvair womens and mens bike helmet FTA system allows you to dial in a fit that is just right for your head. Corvair bike helmets for women and men should fit snugly and comfortably. Before your purchase, check our sizing tutorial video!

DESIGNED IN THE USA- Wildhorn is a grass roots brand based in SLC, UT. Our HQ is just minutes from world class trail systems. All our products are designed and tested locally. This mens and womens bike helmet is CPSC 16 CFR 1203 certified for cycling use.