Best Adjustable Bike Helmets in 2026

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.

Each youth kids ATV helmet is equipped with 1 pair of sports gloves and 1 pair of UV-resistant goggles which is designed with sponge cushion for comfortable wearing. Helmet size: Small:18-19inch; Medium:19-20inch; Large:20-21inch;X-Large:21-22inch.

The youth kids dirt bike helmet is made of quality ABS shell and high-density EPS padding. Meets or exceeds FMVSS-218 and DOT Safety Standards. Providing better protection for your children when riding off road, bike, ATV and participating outdoor sports.

The youth kids motorcycle helmet is designed with multiple vents for better air flow and removable cheek pads which absorb sweat and are breathable while simultaneously in ensuring safety.

✅【SAFE AND RELIABLE】 Kids/Youth ATV Helmets make sure kids are safe, DOT safety standards. It has a great amount of padding and protection inside,which provides excellent layers of protection.

✅【SNUG AND COMFORTABLE】 Kids/Youth ATV Helmets are very comfortable and not too heavy for the kids. It is Great gifts or present for your daughter, son, grandson, granddaughter, child, kids and Grandchildren on Christmas Day, New Year, Birthday.

✅【MULTIPLE AIR VENTS DESIGN】Kids/Youth ATV Helmet has multiple air vents around the helmet to maximize air circulation, make fresh air keep entering the helmet, You can have a good riding experience. The optimized vent reduces the wind noise and can ride more quietly.

Integrated MIPS Protection System

Hardshell With In-Mold Hardbody Lower Wrap: The two-piece shell combines a tough outer hard shell with a polycarbonate lower shell permanently fused to the liner for durability without excess weight

Quick Link Removable Visor

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 users 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 in inches: SMALL: 21 ½ to 22 - MEDIUM: 22 to 22 ½ - LARGE: 22 ½ to 23 - XL: 23 to 23 ½ - XXL: 23 ½ to 24. Head shapes can affect how a helmet fits, the size chart is meant to be a starting point.

Gloves & goggles included! This off road helmet is loaded with features! This is the perfect choice for those looking for a high quality motocross, off-on road or ATV helmet at an affordable price. Typhoon Helmets is American owned and we've been in business selling high quality certified helmets for more than 10 years

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.

FEATURES: Includes an EPS liner, outer PC shell, and unibody shell construction

PROTECTION: Aramid fiber grid for protection and durability

FULL COVERAGE: Designed to provide more coverage at the temples and back of the head

✅【SAFE AND RELIABLE】 Kids/Youth ATV Helmets make sure kids are safe, DOT safety standards. It has a great amount of padding and protection inside,which provides excellent layers of protection.

✅【SNUG AND COMFORTABLE】 Kids/Youth ATV Helmets are very comfortable and not too heavy for the kids. It is Great gifts or present for your daughter, son, grandson, granddaughter, child, kids and Grandchildren on Christmas Day, New Year, Birthday.

✅【MULTIPLE AIR VENTS DESIGN】Kids/Youth ATV Helmet has multiple air vents around the helmet to maximize air circulation, make fresh air keep entering the helmet, You can have a good riding experience. The optimized vent reduces the wind noise and can ride more quietly.

Graphics and design are inspired by our Demon Team.

Fully adjustable visor with aluminum side visor screws.

Tough injection molded thermal alloy resin polycarbonate shell.

♕MATERIAL - DOT Safety Standard, Beautiful glossy UV protective finished, Light weight but extremely durable composite shell, keeps your kids safe and comfy while riding!

♕INTERIOR - Heavily cushioned, breathable and very comfortable interior, Removable and washable padding, well vented all purpose product for everywhere you ride in summer or winter

♕FUN RIDES AND GIFTS - Various interesting and fashion patterns design makes this helmet funny and cool; Great for youth kids dirt bike, off-road, street riding, etc, absolutely a sweet birthday/Christmas gift for children

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.

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.

CERTIFIED SAFETY & SUPERIOR PROTECTION. This helmet has undergone intensive safety tests. It fully complies with 16 C.F.R. part 1203 and CE EN 1078 safety standards. Two reinforced layers providing superior protection from the inside out. Manufacturer Recommended Age: 5 years old and above

VENTILATION. 11 air vents that will keep you cool and comfortable for hours of skateboarding. The air channels have been designed to pull fresh air over and around the head while forcing stale air out.

SIZE ADJUSTABLE. By turning the size adjustment dial, the semi-flexible sizing ring either expands or closes around your head, so you can always have a snug fit. Comes in 2 sizes, S/M for head circumference 20.5” - 22.8” (52cm -58cm). L/XL for head circumference 22.8” - 24” (58cm -61cm). Please measure your head and choose the right size.

Dual certified, urban-style helmet for skateboarding and biking features a vented ABS shell with a subtle brim, and an impact-absorbing EPS liner

Conehead liner construction has collapsing cones that absorb energy and spread force sideways within the helmet; ideal for biking, skateboarding, rollerblading, BMX, derby, and commuting

Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older and ASTM F-1492 Skate safety standards

SUPERIOR TECHNIQUE. 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 connected.

PROTECTED, VENTED AND COOL. Everything the cyclist in you could ask for: shock absorption technology, 22 massive air vents for an outstanding airflow across the head and a low profile, innovative design!

ALL ACCESSORIES INCLUDED. This bicycle helmet for adults has all the added features you need: sleek matte design for a classy look, washable pads and a cushioned chin strap for increased comfort.

DOT Approved; Size XL (59-60 CM,23.2/23.6 Inch)

DOT Approved; Size XL (59-60 CM,23.2/23.6 Inch)

Advanced Dual Lens & Quick Release Buckle Design;

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.

🚀DOT - Youth off-road helmet meets or exceeds DOT safety standards to ensure quality and safety, sharp looking design makes you stand out from the crowd, ideal for dirt bike, motocross, ATV etc.

🚀Lightweight & Comfortable - Upgraded lightweight ABS shell with a thick, high density fully vented EPS liner, ventilation opening system for air intake and exhaust, which brings you a better protection and comfortable wearing during riding

🚀Helmet Size - 【S: Child(cm): 49-50; Inches: 19.28''-19.68''】;【 M: Child(cm): 51-52; Inches: 20.07''-20.47''】;【L: Child(cm): 53-54; Inches: 20.86''-21.26''】;【XL: Child(cm): 55-57.15; Inches: 21.65''- 22.5''】

Quick Release Chin Strap Easily Get It On and Off

Top Quality ABS Shell DOT FMVSS N218 Approved for Motorcycle Riding, Cycling and Other Outdoor Sports

Quality Improved Integrated Drop Down Sun Visor, Removable and Replaceable

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

🚀USA shipping: We have two warehouses in Rancho Cucamonga, California and Harrisburg ,Pennsylvania, United States. So we can ship your orders out as soon as possible.

🎁The best gift for a child. New style design will make you look so cool and fashionable

🏅Well vented all purpose product for summer or winter riding and off-road riding

Impact Resistance: FUNWICT bike helmet is made of high-density PC shell and EPS foam, which can help absorb the impact and protect you well during a crash. Our Bicycle helmet can provide better protection when road bike or mountain bike cycling.

Configuration: Our bike helmet is equipped with rechargeable LED rear light with three modes: steady, fast flashing, and slow flashing. It is necessary to have a bike helmet with light, it will help riders behind you clearly recognize your direction and warning the car.

Lightweight & Breathable: Our cycling helmet is only 340g / 0.75 lb and is designed with 21 air vents, which will not give you any pressure on your head at all, and the cooling vents can move airflow over and you will feel cool and dry when cycling.

【Professional Safety Grade】Westt Jet series motorcycle helmet meets DOT FMVSS-218 and ECE 22.05 Safety Standards complies with the required USA regulation.Exciting fashionable aerodynamic design is the same important as advanced features.

【Outstanding Material & Ventilation System】Westt Helmet has Aerodynamic ABS Shell, Multi-Density EPS, Reinforced Chin Strap, Quick Release Buckle.2 of 4 fully adjustable for intake and exhaust vents to create a constant, light flow of air helping to keep the rider cool and comfortable.

【Comfortable Interior】All Westt's open face helmet motorcycle gear includes fully removeable and washable liner and skin-friendly pads to keep helmet clean and dry.Weighs only 2.86 lbs to reduce fatigue caused by nerve pressure.

MULTI-SPORT: Flybar helmets for adults and teens are adaptable for multi-indoor and outdoor activities including Inline and rollerblade skating, BMX, bike, Pogo, skateboarding and scooter

DURABLE: Made of high-quality ABS shell, high-density EPS foam inner shell with 1-inch thick shock-absorbing foam

SIZE CHART: For a perfect fit, measure the circumference of your head. S/M (53-55cm/20.8-21.6in); M/L (55-58cm/21.6-22.8in); L/XL (58-61cm/22.8-24in) Features an adjustable spin dial to ensure a safe and snug fit

Ultra light weight durable aerodynamic thermoplastic alloy shell;

3-level top ventilation control and 5-position ventilation channel;

Heavily cushioned and comfortable interior, Removable and washable

DOT Certified for Safety - Meets FMVSS-218 and DOT Safety Standard

Beautiful glossy UV protective finished; Light weight extremely durable composite shell;Heavily cushioned and very comfortable interior

Youth Helmet Sizing Chart: Youth Size M: Head circumference 51-52cm= 20.08-20.47 inches; Youth Size L: Head circumference 53-54cm= 20.87-21.26 inches; Youth Size XL: Head circumference 55-56cm= 21.65-22.05 inches; Youth Size XXL: Head circumference 57-58cm= 22.44-22.83 inches

【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】: Light weight 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.

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

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.