Best Kids' Medium Size Helmets of 2025

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Protecting your child's head while they ride their bike or scooter is of utmost importance. That's why we recommend Kids' Medium Size Helmets, designed specifically for children's heads. These helmets come in a variety of fun colours and designs that your child will love, but more importantly, they are built to provide optimal protection in case of an accident. With adjustable straps and cushioned interior, these helmets are both comfortable and secure. We highly advise investing in a quality helmet to ensure your child's safety while they enjoy their outdoor adventures.
At a Glance: Our Top Picks
Top 10 Kids' Medium Size Helmets
Hornit Kids Shark Bike Helmet
The Hornit Kids Helmet is designed for safety and comfort. It fits children with head sizes between 54-58cm, ensuring a snug fit that can be adjusted as they grow. This helmet is safety tested to CE standards, giving you peace of mind while your child enjoys biking, skateboarding, or scootering. The impact protection features include an inner EPS foam liner and a durable ABS outer shell, providing excellent defence against impacts. Additionally, the 11 air vent cooling system helps keep your little one's head cool during use.
LOKJIJI Adjustable Kids Protective Helmet
The LOKJIJI Kids Helmet is designed for children aged 5-14, featuring adjustable straps for a perfect fit as they grow. Its strong construction, with an impact-resistant ABS shell and EPS foam, offers excellent shock absorption for safety during activities. The helmet is breathable and comfortable, thanks to 11 vents that keep you cool, while the adjustment dial and padded chin strap ensure a snug, secure fit. This versatile helmet is ideal for various sports, including cycling and skating, providing reliable protection whenever your child needs it.
MGY Boys Adjustable Galaxy Series Helmet
The MGY Galaxy Helmet is designed for children aged 5-14, featuring adjustable straps for a secure fit as they grow. With CE and CA safety certifications, it provides essential protection for various sports, ensuring your child's safety during activities like cycling and skateboarding. The helmet's breathable design, with 11 ventilation holes, keeps your child's head cool and comfortable during exercise. Additionally, the adjustable dial system allows you to customise the fit for maximum comfort and security.
Ylaide Kids Adjustable Bike Helmet for Ages 3-14
The Ylaide Kids Bike Helmet is designed for children aged 3 to 14, offering two adjustable sizes for a perfect fit. Its double layer protection features a high-quality ABS shell and shock-absorbing EPS foam, ensuring safety during outdoor activities like cycling and skating. With an adjustable design, you can easily customise the helmet to your child's head size, providing comfort and security. This helmet is versatile, suitable for various sports such as skateboarding and scooting, making it an essential accessory for your child's active lifestyle.
Adjustable Kids Bicycle and Skateboard Helmet
The SZHZS Kids Helmet offers excellent protection for your little ones while they enjoy various outdoor activities. It features an adjustable design, ensuring a snug fit for head sizes between 51cm and 58cm. With 11 air vents, this helmet keeps your child's head cool during play. The padded chin strap and quick-snap closure add to the comfort, making it easy for you to put on and take off. Constructed with a strong ABS shell and shock-absorbing EPS foam, it provides reliable safety across multiple sports.
MET Superbuddy Children's Cycling Helmet Medium
The MET Superbuddy Helmet is designed for young cyclists, featuring a twin-shell construction that enhances durability and protection. The Safe-T Twist 2 Fit System allows you to easily adjust the fit, ensuring comfort as your child rides. Hand washable comfort pads make maintenance simple, helping to keep the helmet fresh and clean. Additionally, the in-moulded anti-insect net provides a barrier against unwelcome bugs, allowing for a more pleasant cycling experience.
Micro Deluxe Children's Helmet with Light
The Micro Children's Helmet is designed with safety as a priority. It features an integrated rear light that enhances visibility when your child is out and about, ensuring they are seen by others. The adjustable straps and spin dial allow you to achieve a snug and comfortable fit, providing peace of mind while riding. Additionally, the protective chin pad offers maximum comfort and prevents accidental pinching, making it easier for little fingers to fasten their helmet independently.
Children's Adjustable Bike Helmet for Ages 3-13
The ckorison Kids Helmet is designed to keep your child safe and comfortable while cycling or engaging in other sports activities. It boasts a sturdy PC outer shell and lightweight EPS foam, providing excellent protection. The helmet features 15 ventilation holes for optimal airflow, ensuring your child stays cool. Additionally, it has an adjustable buckle and spin dial for a customised fit, so you can easily find the right size for your child’s head. This combination of safety and comfort makes it ideal for young adventurers.
LOKJIJI Adjustable Kids Bike Helmet for Multi-Sports
The LOKJIJI Kids Bike Helmet is designed for children aged 5 to 14, featuring adjustable straps to ensure a perfect fit as they grow. The eye-catching colour gradient design not only looks stylish but also enhances visibility for added safety. Made from a robust ABS shell and high-quality EPS foam, it offers excellent shock absorption, ensuring your child's head is well-protected during various sports. The helmet’s lightweight construction and 11 vents keep your child cool and comfortable, making it ideal for cycling, skateboarding, and more.
Micro Bike/Scooter Deluxe Children's Helmet
The Micro Children's Helmet prioritises safety, ensuring your child wears a properly fitted helmet while riding. The integrated rear light enhances visibility, providing peace of mind during outdoor activities. With adjustable straps and a spin dial, you can achieve a snug, comfortable fit for your child's head. Additionally, the protective chin pad offers maximum comfort and prevents accidental pinching, making it easier for little fingers to fasten the helmet independently.
Frequently Asked Questions (FAQs)
1. What size is a small medium helmet?
One brand will have a Medium size being the equivalent to 54 – 58 cm, while another brand will show Medium size as being 55 – 60 cm....7iDP Mountain Bike Helmets Sizing #3.
During our kids' medium size helmet research, we found 124 kids' medium size helmet products and shortlisted 10 quality products. We collected and analyzed 5,569 customer reviews through our big data system to write the kids' medium size helmets list. We found that most customers choose kids' medium size helmets with an average price of £20.91.
The kids' medium size helmets are available for purchase. We have researched hundreds of brands and picked the top brands of kids' medium size helmets, including Hornit, LOKJIJI, MGYZM, Ylaide, SZHZS. The seller of top 1 product has received honest feedback from 60 consumers with an average rating of 4.8.

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.