Best Adjustable Bike Helmets in 2026

Youth Helmet Glove and Goggle combo The quality and price you expect from TYPHOON HELMETS. Typhoon Helmets is American owned and we've been in business selling high quality certified helmets for more than 10 years

PLEASE PLEASE measure for size, we cannot impress on you enough how important it is that you measure for the correct size. Each manufacturers sizing is different. Measure the circumference of the largest part of the child's head, (usually just above the eyebrows) in inches: Use a paper tape measure or a string and do not pull it too tight, loose like a hat would fit.

SIZE CHART Youth Small: 18 to 19, Youth Medium: 19 to 20, Youth Large: 20 to 21, Youth XL: 21 to 22. Head shapes can affect how a helmet fits, the size chart is meant to be a starting point.

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

UNIVERSAL FIT SIZING: Get the right fit, straight out of the box

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

Adjustable Helmet Size: VG110 model bike helmet is suitable for adult men and women, 3 sizes available, size M: 21.3-22.8 inch (54-58 cm); size L: 22.4-24 inch (57-61 cm); size XL: 23.2-24.8 inch (59-63 cm). It is easy to adjust the bicycle helmet size with hand. Our bicycle helmet will give you a comfortable and happy cycling trip.

Cool and Lightweight Cycling Helmet: Our bike helmet is designed with 21 breathable vents, the cooling vents can move airflow over your head to stay cool and dry. This cycling helmet only 310g (0.68 lb) will not cause any burden to the rider's head during cycling.

Impact Resistance: Our bike 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 bicycle helmet provides better protection when road cycling or mountain biking, greatly helping to decrease and buffer the impact.

MIPS SAFETY - The Mips system is designed to provide added safety for helmets in many accidents. For certain impacts, the system can reduce harmful rotational forces.

DOUBLE ADJUSTMENT - 2 different thicknesses liners(0.23&0.31inch) and the adjustment dial maximize the head fit, flexibly adapted to different kinds of cycling glasses and avoid pulling hair.

COMFORTABLE - The removeable visor and the skin-friendly adjustable chin strap offers comfortable wearing and better fit better.

IMPACT RESISTANCE:These bike helmets are specially designed for Kid / Children safety protection. PC 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

COOL and COMFORTABLE:14 vents let air go through the skating helmet,Super lightweight 200g(7 OZ) ,more comfortable, cooler rides.and the helmet liner use Velcro adhesive ,can be removable and washable.

2 SIZE AVAILABLE :Adjustable regulator and strap which make it flexible to fit the size of toddler / youth. Size S:50-54 cm（19.7''-21.2''),suitable for 3-8 years old;Size M:54-58 cm（21.2''-22.8''),suitable for 8-14 years old

IMPACT RESISTANCE: The kids bike helmets are specially designed for multi-sports head protection. The material use is tough and durable PVC, EPS foam which would help absorb the impact and protect your kids head during impact

HEAD SIZE: This toddler helmets product size is 18.89''-21.26'' (48-54cm), it’s suitable for 3-8 years old.Please choose the helmet according to the head circumference classification, if you have size problem or any other question, please contact us freely.

ADJUSTABLE FIT: This toddler bike helmet has an adjustable spin dial on the back of the helmet to ensure you achieve a perfect and safe fit. After a day of riding you can easily remove the inner lining and wash away any sweat

DOT certified for Safety - meets or exceeds FMVSS-218 and DOT safety standards.

Upgraded lightweight ABS shell with a thick, high density fully vented EPS liner, brings you better protection and comfortable wearing.

Sleek aerodynamic design made for speed. Front and back air vents for maximum ventilation.

DOT Approved - Meets or exceeds FMVSS-218 and DOT safety standards. S:55-56 CM,M:57 -58 CM,L:59-60 CM,XL:61-63 CM,XXL:63-64 CM, The helmet size runs smaller than regular helmet, please kindly choose one size up when ordering the dual sport helmet.

Dual Visors - HD enhanced wide-angle lens to increase periferal vision and improve riding safety, and the sun visor is great for protecting against the sun, which can be rotated slightly according to the direction of the sun to avoid direct sunlight. This motorcycle helmet also comes with an inner tinted visor.

Ventilation - Aerodynamic air intake system to introduce fresh air and replace the hot air inside the helmet.

Microshell with built-in net

Built-in visor and pinch-proof buckle

Mini Loc fit system

2 Visors Included: Clear + Smoked and 1 Neck Scarf for Winter Use

Streamlined Aerodynamic Design Reduces Wind Noise and Drag

Advanced and Lightweight Durable ABS Shell

【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.

True youth helmet with a smaller shell, not an over padded adult helmet. These helmets are tested regularly by an independent test facility to be sure they meet the DOT Standard. But also the helmet weighs 3 lbs so it's not not meant for anyone too young (under 5 years old)

PLEASE PLEASE measure for size, we cannot impress on you enough how important it is that you measure for the correct size. Each manufacturers sizing is different. Measure the circumference of the largest part of the child's head, (usually just above the eyebrows) in inches: Use a paper tape measure or a string and do not pull it too tight, loose like a hat would fit.

SIZE CHART Youth Small: 18 to 19, Youth Medium: 19 to 20, Youth Large: 20 to 21, Youth XL: 21 to 22. Head shapes can affect how a helmet fits, the size chart is meant to be a starting point.

20 high-flow intake and exhaust ports for maximum ventilation

Added EPS and new head-form shape for improved impact performance

Exceeds bicycle certifications: ASTM F1952-15, ASTM F2032-29

Shell Material: polycarbonate

Impact Foam: dual-density Varizorb EPS, [liner] XT2

Ventilation: optimized

HIGHLY STURDY: Thanks to the durable combination of high-density EPS inner layer and hard PC outer shell, this makes the bike helmet lightweight, shock-absorbing, and impact-resistant to provide all-around protection for your head while riding.

VERSATILITY & OPTIONAL HELMET ACCESSORIES: (breakaway visor, magnetic silver mirror goggles, and 2 sets of interior paddings included). The removable large visor keeps the sun or the occasional tree branches away from your face. The upgraded goggles with a reflective mirror ensure optimum protection against sun, cool wind, and sand during cycling. 2 sets of interior paddings are interchangeable and washable for safety and comfort.

INCREASED VISIBILITY: Equipped with the integrated plug-in LED rear light, which is USB rechargeable, water-resistant, and features 3 settings (normal, slow, and fast flash modes). Fully charged in 1.5 hours. Last for about 4-12 hours. This bicycle helmet ensures ideal visibility on the road to enhance riders' safety, and draw drivers’ attention.

SIZE:This adult cycling helmet goes with perfect size, Head circumference 57-62cm, head width 7inch/18cm, head length 9inch/23cm equipped with the easy-use dial system and side straps make this nutcase helmet adjustable to different head size and suitable for both men and women.

VENTILATION:The bike helmet designed with 18 Air Vents ensuring optimal air flow.The adoption of specialized aerodynamic and ventilation design allow air go through the biking helmet which help increase the speed and keep stay cool.

SAFETY:We follow 3 crucial steps to achieve a solid constructed bicycle helmet by first placing the exterior shell in the mould, then reinforcing it with a skeleton and finally adding the foam that will hold all the parts firmly connected, thus making sure you are safe in a case of an accident.

PRACTICAL DESIGN - Hax motorcycle helmet meets DOT safety standards. The aerodynamic design helps reduce wind resistance and minimize wind noise. Multiple vents can quickly replace the stuffy air. Upgrade emergency padding removal pull, safe and convenient.

PERFECT COMFORT - Motorcycle Street Bike Helmet is an upgraded liner with anti-allergic design, which is extremely comfortable and has good impact resistance and provide better fit. The internal design of the Bluetooth headset slot is more convenient.

PRODUCT ADVANTAGES - Hax helmet lenses with clear and wide vision,with Pinlock Ready plastic nails,you can purchase an anti-fog lens' model DKS274 to install separately(Not inclued).It is suitable for PINLOCK 70 . Provide 2 different tail fins for replacement, and equipped with a thick cloth bag.You can also directly browse our store or details page to purchase Pinlock lenses.

【Safety Kids Bike Helmet】 Our child’s helmet made of Durable hard PC shell and high-density EPS foam,removable soft inner padding, multiple protection & shock absorption.Take full care of your child's head safety.What’s more, this helmets provide professional protection for children through CE safety certification,Please be assured that it will protect your child's head like Superman

【Lightweight & Breathable】This bike helmet design with 12 large vents, use breathable and comfortable foam material.Effectively reduce air resistance and reduce sweating, Are you still worried that the child is too stuffy and uncomfortable to wear a helmet? This full face helmet is so breathable and comfortable that your child will love it; Moreover, the helmet’s light only 13.4 oz (0.84 lb) protects cervical spine and will not cause any burden to the head

【2 IN 1 Detachable Helmet】ROCK BROS Kids Cycling Helmet can free conversion between half helmet and full face helmet at any time, The Bicycle helmet with removable chin guard, the chin guard is easy to remove with a button. So when it is just an ordinary leisure ride, you can easily remove the chin guard

Protection: Lightweight In-moId construction

Fit: 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

Ultra Lightweight - The ILM-610 dirt bike helmet is made of Glass Fiber Reinforce Plastic(GFRP, also known as Fiberglass composite reinforced material), which allows the helmet to only weigh around 2.53 lbs, much lighter than normal ABS dirtbike helmets.

Much Safer - Different from ABS, Fiberglass ensures the helmet with more durable and stronger impact resistance performance, effectively absorbs external forces.

DOT - The ILM-610 fiberglass offroad helmet meets and exceeds DOT safety standards. ILM is as always implementing global mainstream standards for testing experiments.

MATERIAL - Light-weight but extremely durable composite ABS shell, beautiful glossy UV protective finished, protects your head from injury and keeps you safe and comfy while riding

INTERIOR - Heavily cushioned, breathable and very comfortable interior, Removable and washable padding, Quick release buckle,easily put on and off; well vented all purpose full face helmets for everywhere you ride in summer or winter

OCCASION - Various interesting and fashion patterns design makes this helmet funny and cool; Great choice for motocross, dirt bike, off-road, ATV, BMX, street riding, etc

Toddler Helmets: the package contains 4 pieces of helmets for kids, come in different colors of pink, blue, black and yellow, perfect for girls and boys, and features 11 vents to provide sufficient air flow, reducing sweating and keeping cool when use, suitable for kids skateboarding, biking, roller blading, scooter or other outdoor sports

Quality Helmets: these kids bicycle helmets are made of quality ABS material, strong and sturdy, can resist impact, not easy to break, and compliant with the CPSC safety standard, certified to keep kids safe from bumps and bruises; And constructed with EPS foam, which can provide shock-absorbing, an excellent helmet for toddlers

Helmets for Kids 3-8: these skateboard bike helmets are specially designed for kids ages 3-8, light in weight, the size of each helmet measures about 48-54 cm/18.9-21.3inch, with adjustable design and safety buckle, keeping it in place for better protection when you are sporting, providing a snug fit

Adult Bike Helmet: the Codax KinetiCore is a sporty all-around cycling helmet

Next-level Technology: built-in KinetiCore offers additional protection from rotational impact in the event of a crash

LED Light Compatible: made for use with the Universal Lazer LED light to increase visibility in all light and weather conditions

MADE FOR TRAIL & ENDURO: A lightweight helmet with the durability and protection needed for trail and enduro riding; Features unique airflow channels to keep you cool, even on hot summer days

SPIN PROTECTION: Features POC’s patent-pending silicone pad technology system, SPIN (Shearing Pad Inside), that uses innovative materials and design to complement POC's whole-helmet approach

EXTRA SAFETY: Built-in peace of mind; Features an adjustable visor that will break away in a crash to help minimize forces transferred to the head and reduce neck injury

Neon Yellow

DESIGN - Excavator & construction themed graphics with bright yellow bendable rubber 3D mohawk.

CONSTRUCTION - Adjustable straps for a custom snug fit, and aerodynamic cooling vents for great airflow. Durable outer PVC shell, and impact dampening expanded polystyrene inner foam construction.

STYLE - Perfect light weight helmet for your little rad ripper to use while riding a bike, scooter, skateboard or rollerblades!

Details:TAG Fit SystemBlade Visor with Integrated Flea Light PerchFusion InMold MicroshellChanneled Ventilation

✅ DOT Approved: Milwaukee MPH9819DOT modular full-face helmet has a composite shell which is a type of protective gear that meets and exceeds the Department of Transportation FMVSS 218 safety standard. It’s made with strong light weight material, designed to provide high level protection to the rider in the event of a crash. Our helmet has a thick EPS (expanded polystyrene) inner lining for comfort and added protection.

✅ Safety: Motorcycle helmet for men and women is designed with a comfortable adjustable Y-strap (chin strap) retention systems to keep the helmet secure, which is important during high-impact activities. A modular biker helmet contains a flip-up feature that allows the rider to easily flip the front part of the helmet up and away from their face, making it convenient for taking breaks, eating, or talking to other people while on a bike or snowmobile.

✅ Lightweight Material: Green modular biker helmets are designed to be lightweight, which makes them more comfortable to wear for long periods of time and reduces fatigue while riding. The strong lightweight design is achieved by using advanced materials such as, carbon fiber or polycarbonate. Our biker helmet comes with an air-conditioned feature to prevent the face shield for getting foggy, ultimately having a refreshing ride in hot weather.

ADJUSTABLE RETENTION SYSTEM: The 360° adjustment system provides a perfect fit at the turn of a dial by one hand. This kid’s bike helmet is suitable for head circumferences: 20.47-22.05 in. (52-58 cm). Recommended Age: 5-13 years. IMPORTANT: Please always take a head measurement, since head sizes and shapes vary, even within an age range.

ALL-AROUND PROTECTION: Thanks to the high-quality combination of PC outer shell and EPS inner foam, this bicycle helmet for youth and children is shock-absorbing and impact-resistant.

WELL-VENTILATED: 14 vents in a lightweight helmet ( 250g ) ensure optimal ventilation that guides air over and through the vents to evaporate sweat while keeping your kid cool and comfortable as riding.