Best Size M Allround Cycling Helmets of 2025

Luke Dobson Avatar
Luke Dobson
Last Updated: 10 Feb 2025

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If you're a cycling enthusiast, then you know the importance of having a good quality helmet. The Size M Allround Cycling Helmets are an excellent option for anyone looking for a sturdy and reliable head protection while cycling. With a sleek and modern design, these helmets are not only stylish but also provide optimal comfort and ventilation. They come in various colours and are suitable for both men and women. Whether you're a professional cyclist or a casual rider, these helmets are sure to provide the necessary protection for a safe and enjoyable ride.

At a Glance: Our Top Picks

ABUS MoTrip MTB Helmet for Adults Cover #TOP 1
ABUS MoTrip MTB Helmet for Adults
ftb score rating icon 9.8
Favoto Lightweight Mountain Bike Helmet for Adults Cover #TOP 2
Favoto Lightweight Mountain Bike Helmet for Adults
ftb score rating icon 9.7
Victgoal Adjustable Bike Helmet with LED Light Cover #TOP 3
Victgoal Adjustable Bike Helmet with LED Light
ftb score rating icon 9.5

Top 10 Size M Allround Cycling Helmets

#TOP 1

ABUS MoTrip MTB Helmet for Adults

64754
M (54-58 cm)
ABUS MoTrip MTB Helmet for Adults Cover
ABUS MTB Helmet MoTrip, Robust Bike Helmet with Impact Protection, Mountain Bikers, Individual Fit, Unisex Adult - Concrete Grey - Size M

The ABUS MoTrip Helmet offers reliable head protection for mountain biking beginners, ensuring comfort on uneven terrains. The Zoom Ace adjustment system allows you to customise the fit, providing a snug yet comfortable feel. Weighing only 340 g, this unisex helmet is lightweight, making it ideal for long rides. Additionally, the height-adjustable adjustment system accommodates braid wearers, enhancing convenience and allowing for a more personalised experience.

What We Like
Reliable head protection
Customisable fit
Lightweight design
Comfortable for braid wearers
#TOP 2

Favoto Lightweight Mountain Bike Helmet for Adults

AMUK-Bike-Helmet-B025-Black-M
Black
Favoto Lightweight Mountain Bike Helmet for Adults Cover
Favoto Mountain Bike Helmet Lightweight - MTB & Road Bicycle Helmet for Men Women - Adjustable Black Cycling Helmet for Adults Youth with CE Certificated Size M

The Favoto Bike Helmet is designed for both comfort and safety. Its dual shell protection, certified by CE and CPSC, ensures you receive superior impact protection while cycling. You will appreciate the lightweight design, weighing just 335g, which reduces pressure on your head during long rides. The integrated moisture-wicking liner keeps you cool and dry, and it is easily removable for cleaning. Additionally, the reinforced sun visor protects your eyes from debris, allowing you to focus on the road ahead.

What We Like
Lightweight and comfortable
Excellent impact protection
Removable and washable liner
Adjustable fit for all sizes
Effective sun visor protection
#TOP 3

Victgoal Adjustable Bike Helmet with LED Light

HT-23
Yellow
Victgoal Adjustable Bike Helmet with LED Light Cover
Victgoal Bike Helmet for Men Women with Led Light Detachable Magnetic Goggles Visor Mountain & Road Bicycle Helmets Adjustable Size Adult Cycling Helmets (M: 21.3-22.8 inch (54-58 cm), Yellow)

The Victgoal Bike Helmet offers an adjustable fit, making it suitable for both men and women. You can easily modify the size with one hand for a comfortable cycling experience. Its lightweight design, at just 310g, ensures that you won’t feel weighed down while riding. The helmet features a high-density hard shell that provides excellent safety protection, absorbing impact from any external forces. Additionally, the detachable magnetic goggles and visor protect your face from wind and sunlight, enhancing your overall cycling comfort.

What We Like
Adjustable size for comfort
Lightweight for easy wear
Superior safety protection
Removable visor and goggles
#TOP 4

EASTINEAR Adjustable LED Bike Helmet for Adults

HT31
White
EASTINEAR Adjustable LED Bike Helmet for Adults Cover
EASTINEAR Adults Bike Helmet for Men Women with LED Taillight Cycle Helmet for Urban Commuter with Sun Visor Cycling Mountain & Road Bicycle Helmets Adjustable Size M/L (White)

The EASTINEAR Bike Helmet offers a modern design that is perfect for urban commuting and various outdoor sports. Its built-in LED taillight enhances your visibility in low-light conditions, ensuring you are noticed by drivers and pedestrians. With durable materials, it provides optimal protection against impacts, making your rides safer. Additionally, the excellent air circulation system keeps you cool during long rides by promoting airflow, enhancing your overall cycling experience.

What We Like
Stylish modern design
Built-in LED for visibility
Durable and protective materials
Effective air circulation
Adjustable for a snug fit
#TOP 5

Shineled Adjustable Bicycle Helmet with Goggles

Black
M(55-58cm)
Shineled Adjustable Bicycle Helmet with Goggles Cover
Men's and Women's Bicycle Helmet with Magnetic Visor, Removable Sun Protection Cap and Size Adjuster, Black Helmet for E-Bike, Mountain Bike & City Bike (M Protective Glasses)

The Shineled Bicycle Helmet offers excellent protection and comfort for your riding adventures. Its durable and shockproof material ensures that your head is well-protected against impacts, while the inner EPS foam cushioning absorbs shocks, reducing the risk of injury. The adjustable goggles are perfect for shielding your eyes from wind, rain, or sand, enhancing your visibility. Additionally, the helmet features a moisture-wicking, breathable inner lining that keeps you comfortable during rides, and its built-in vents promote airflow, helping to keep you cool on warmer days.

What We Like
Lightweight and shock-resistant
Adjustable goggles for protection
Breathable and removable lining
Good airflow with built-in vents
Adjustable to various head sizes
#TOP 6

Masdio Lightweight Bicycle Helmet with LED Lights

Masdio
EW618
Black
M(55-58cm)
Masdio Lightweight Bicycle Helmet with LED Lights Cover
Masdio Lightweight Bicycle Helmets with LED Lights, with Visor, Adult Bike Helmets, Large & Standard Size, Helmets for Adults (M)

The Masdio Bicycle Helmet is designed with your safety and comfort in mind. It features a built-in UV protection visor, which protects your eyes from sunlight, dust, and debris, making your rides more enjoyable. The bright LED lights enhance your visibility during night rides, ensuring you stay safe on the road. With an adjustable fit, this helmet provides a secure and comfortable experience, accommodating small head sizes. Additionally, its durable construction offers reliable protection against falls, allowing you to ride with confidence.

What We Like
Bright LED lights for visibility
Adjustable fit for comfort
Durable and impact-resistant
UV protection visor included
Lightweight design for ease
#TOP 7

ABUS Macator Sporty Bike Helmet for All

87212
ABUS Macator Sporty Bike Helmet for All Cover
ABUS Macator Racing Bike Helmet - Sporty Bicycle Helmet for Beginners - for Women and Men - Black, Size M

The ABUS Macator Helmet is a great choice for beginners seeking a sporty and reliable cycling experience. Its durable EPS and PC shell ensures safety, while the Zoom Ace adjustment system allows you to find the perfect fit easily. Enjoy high comfort with the fully enclosed plastic ring that adapts to your head shape. Additionally, the balanced ventilation system, featuring five air inlets and eight outlets, guarantees good airflow, keeping you cool during your rides.

What We Like
Durable construction
Customisable fit
Comfortable for long rides
Excellent ventilation
#TOP 8

ABUS Aduro 2.0 City Helmet for Adults

72550
White (race white)
ABUS Aduro 2.0 City Helmet for Adults Cover
ABUS Aduro 2.0 City Helmet - Allround Bicycle Helmet in Sportive Design for City Traffic - for Women and Men - White, Size M

The ABUS Aduro 2.0 Helmet is designed for both men and women, ensuring a secure and custom fit with its Zoom Evo Adult adjustment system. The removable and washable padding enhances your wearing comfort, making it easy to maintain. With 11 air inlets and 3 outlets, this helmet offers excellent ventilation, helping to keep you cool during your rides. Weighing just 295 g, it provides reliable protection without feeling cumbersome. This helmet is perfect for urban cycling, combining safety with comfort.

What We Like
Customisable fit for comfort
Removable, washable padding
Excellent ventilation system
Lightweight design
Unisex appeal
#TOP 9

ABUS Youn-I ACE City Helmet for Daily Use

66792
White (pearl white)
ABUS Youn-I ACE City Helmet for Daily Use Cover
ABUS Youn-I ACE City Helmet - Modern Bicycle Helmet for Daily Use - for Women and Men - White, Size M

The ABUS Youn-I ACE Helmet is designed for daily cycling, offering safety, functionality, and style. Its lightweight and stable design features a durable connection between the EPS and PC shell, ensuring a secure fit with the Zoom Evo Adult adjustment system. You will appreciate the high-mounted LED tail light, providing excellent 180° visibility for added safety on the road. Additionally, the helmet's finely balanced ventilation system promotes airflow, keeping you cool during your rides, thanks to its five air inlets and twelve air outlets.

What We Like
Lightweight and stable construction
Excellent visibility with LED light
Effective ventilation system
Customisable fit for comfort
#TOP 10

ABUS Aduro 2.0 Blue City Helmet for All

72770
Blue (blue art)
M (52-58 cm)
ABUS Aduro 2.0 Blue City Helmet for All Cover
ABUS Aduro 2.0 City Helmet - Allround Bicycle Helmet in Sportive Design for City Traffic - for Women and Men - Blue Art, Size M

The ABUS Aduro 2.0 Helmet is designed for both men and women, offering a safe and comfortable cycling experience. Its adjustable Zoom Evo Adult system ensures a personalised fit, allowing you to ride with confidence. Enjoy high levels of comfort with removable and washable padding, which keeps the helmet fresh and pleasant to wear. The helmet also features excellent ventilation, with 11 air inlets and 3 outlets, providing a cool ride on warm days. This helmet combines safety and comfort, making it ideal for city cycling.

What We Like
Customisable fit for comfort
Removable, washable padding
Good ventilation system
Lightweight design
Unisex appeal
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What size is a medium cycle helmet?

All helmets are made to cover a range of sizes. For instance, a medium helmet will typically cover head sizes from 54-58cm.

2. How do you size a bicycle helmet?

Take a soft measuring tape and wrap it around your head about one inch above your eyebrows and ears. Make sure the tape is level. Most helmets are measured in centimeters, so measure your head in centimeters if you can. In case you don't have a centimeter tape, the conversion ratio is 1 inch = 2.54 cm.

3. Should I size up or down for bike helmet?

Choose the smaller size. Make customizations as necessary, such as twisting the dial fit system, removing fit pads and/or adjusting straps. A well-fitting bike helmet should be snug, but not too tight. It should rest level on your head and should not tilt back.

Editor's Notes

During our size m allround cycling helmet research, we found 306 size m allround cycling helmet products and shortlisted 10 quality products. We collected and analyzed 56,659 customer reviews through our big data system to write the size m allround cycling helmets list. We found that most customers choose size m allround cycling helmets with an average price of £29.49.

The size m allround cycling helmets are available for purchase. We have researched hundreds of brands and picked the top brands of size m allround cycling helmets, including ABUS, Favoto, Victgoal, EASTINEAR, Shineled.

Written by
Luke Dobson Avatar

Luke is a runner, a climber, hiker, hunter, and a lot more. Luke Dobson is Celtic-born and has lived most of his life in Scotland. However, his sporting endeavours have taken him to several countries around Europe. He serves as a tour guide for countless companies and owns a couple of gyms and recreational centres in Scotland. Luke Dobson is proficient in 7 different languages. He maintains many sport article columns where he shares his wealth of experience in the sport industry.