How to Choose a Bike Helmet
When buying a new bike helmet, you need to consider several aspects. First, the helmet type should match your riding style. Second, helmet function, size, and performance level are key to ensuring comfort and safety. In addition, it is crucial to ensure that the helmet meets safety standards while finding the right helmet for you within your budget.
Why Do You Need a Bike Helmet?
A bike helmet is designed to protect your head from serious injuries, such as skull fractures, by absorbing the impact during a fall or collision. It helps reduce the force exerted on your head, making it an essential safety item for any cyclist.
In addition to basic impact protection, modern helmets incorporate advanced technologies like MIPS (Multi-Directional Impact Protection System) and WaveCel. These systems are specifically designed to reduce rotational forces during a crash, which are believed to contribute to concussions. This added protection minimizes the brain’s movement inside the skull, lowering the risk of brain injuries.
Bicycle Helmet Type
Choosing the right bike helmet is essential for safety. The type of bike you ride affects the helmet’s design and protective features. Different helmets are made for specific riding environments, ensuring you have the right protection for your bike type.
1. Mountain Bike Helmets and Their Variants

Mountain bike helmets typically include three types: standard mountain helmets, BMX helmets, and full-face helmets. They share a common feature of providing strong protection for the back and sides of the head, making them suitable for rugged terrains and complex riding environments. Check out the Best Budget Mountain Bikes.
Mountain Bike Helmets
Mountain helmets are designed to handle the variable conditions of off-road environments, offering high durability and strong head protection. Compared to road helmets, they provide greater coverage for the back and sides of the head. Given that mountain biking often involves mud, rocks, and other obstacles, these helmets usually have reinforced shell structures and comfortable liners to ensure stable support for the head over bumpy terrains. Check out the best mountain bike helmets.
Full-face mountain bike helmet
Full-face mountain bike helmets are a variant of mountain helmets particularly suitable for high-intensity downhill riding. Unlike other helmets, full-face helmets cover the entire face, providing comprehensive protection for the head, chin, and face.
Due to the high speeds and risks associated with downhill riding, these helmets are very popular in competitions and extreme sports. Their designs often include reinforced shells and additional layers of protection to minimize injury during severe impacts.
BMX Helmets
BMX helmets are a variant of mountain helmets specifically designed for stunt riding and BMX competitions. Compared to traditional mountain helmets, BMX helmets are sturdier and have a relatively rounded shape to minimize the concentration of force during impacts. BMX riding involves high-speed turns, jumps, and flips, so these helmets typically have fewer ventilation holes to ensure maximum protection for the head during falls from various angles.
2. Road and Gravel Bike Helmets

Road and gravel bike helmets are typically designed with a focus on lightweight construction and aerodynamics to improve speed and comfort. They often feature numerous ventilation holes to help keep the rider’s head cool during long-distance and high-speed rides.
Road Bike Helmets
Road bike helmets are specifically designed for long-distance and high-speed cycling, usually featuring a lightweight and streamlined shape to reduce air resistance. Since road cycling typically takes place on flat roads, these helmets emphasize comfort and adaptability for extended wear. The large ventilation holes help maintain coolness in hot weather, while the lightweight design reduces strain on the neck.
Gravel Bike Helmets
Gravel bike helmets are similar in design to road helmets but with enhanced capabilities for mixed-terrain riding. These helmets retain the lightweight and ventilated features of road helmets while offering improved protection for gravel, loose terrain, and minor obstacles. They combine the comfort of a road helmet with the protection of a mountain bike helmet, making them well-suited for gravel riding.
3. Recreational and Commuter Bike Helmets

Recreational and commuter helmets prioritize comfort and convenience for everyday cycling. Compared to mountain and road helmets, these helmets are simpler and more user-friendly, often featuring practical safety features.
Recreational Bike Helmets
Leisure bike helmets are designed for short-distance rides and casual everyday use. They strike a balance between weight and protection, ensuring basic safety while providing comfort. Since leisure cycling doesn’t involve intense activity, these helmets usually don’t have advanced protective features but focus more on affordability and attractive design.
Commuter Helmets
Commuter helmets are designed for daily use in urban environments, ensuring safety while considering visibility in low-light conditions or at night. Many commuter helmets come equipped with reflective strips and LED lights to improve visibility, making it easier to be seen in busy traffic. These helmets also feature good ventilation, ensuring that riders don’t feel overheated during their commute.
4. Kids Bike Helmets

Kids bike helmets are specially designed for young riders, ensuring head safety while maintaining comfort. These helmets are typically lightweight, meet strict safety certifications, and come in bright colors to attract kids’ attention.
The design of children’s helmets takes into account the unique characteristics of a child’s head, striking a good balance between protection and comfort. Whether for learning to ride or everyday cycling, children’s helmets provide reliable head protection.
Related Articles:
Bicycle Helmet Feature Selection
When choosing a bicycle helmet, in addition to the type, you can also select additional features based on your personal needs. These features can enhance comfort and ensure a good wearing experience in different weather and riding conditions. Here are some common helmet features:
- Ventilation Design
A good ventilation system helps keep your head cool, especially during long rides or in hot weather. The number and layout of the ventilation holes determine how well air circulates, ensuring that you don’t feel overheated or uncomfortable while riding. - Liner Material
The material of the liner directly impacts the helmet’s comfort and moisture-wicking capabilities. Common liner materials include foam, fabric, and antibacterial fabrics, which not only provide a comfortable fit but also help absorb moisture and keep the interior of the helmet dry. - Adjustable Straps
Adjustable straps allow the helmet to better fit different head shapes, ensuring a secure fit. Most helmets come with quick-adjustment systems, enabling users to adjust the tightness of the straps to ensure the helmet stays in place during rides. - Sun Visor
Some helmets come with detachable sun visors that effectively block sunlight, reducing strain on the eyes, especially during daytime rides. These visors are usually lightweight and easy to remove, allowing for convenient adjustments as needed. - Reflective Elements
To increase visibility in low-light conditions, some helmets feature reflective strips or LED lights. These features are particularly important for night riding, helping to enhance safety.
Explanation of Bicycle Helmet Sizing Chart
When choosing a bicycle helmet, it is essential to find the right size to ensure both comfort and protection. A well-fitting helmet can make a significant difference in how effectively it absorbs impact and stays securely in place during a ride.
Bicycle Helmet Size Parameters
Helmet sizes are usually measured by the circumference of the rider’s head, expressed in centimeters. Most brands provide a size chart with ranges for small, medium, large, and extra-large helmets. To find your size, measure the circumference of your head just above the eyebrows and around the widest part of your head. For example:

- Small: 51-57 cm
- Medium: 54-60 cm
- Large: 58-61 cm
- Extra-Large: 60+ cm
Different brands may have slightly varying measurements for these ranges, so it’s always a good idea to consult the specific brand’s size chart before making a decision.
How to Find the Right Bicycle Helmet Size
Finding the right helmet size involves a few simple steps:
- Measure Your Head
Use a flexible tape measure to wrap around the largest part of your head, just above your ears and eyebrows. Make sure the tape is level all the way around for an accurate measurement. - Check the Size Chart
Refer to the size chart provided by the helmet manufacturer. Match your head measurement to the corresponding size range. - Try It On
Once you have your size, try on the helmet. It should sit level on your head, with the front edge resting about two fingers’ width above your eyebrows. The helmet should feel snug but not too tight, and there should be no significant gaps between the helmet and your head. - Adjust the Fit
Most helmets come with adjustable systems, such as a rear dial or side straps, to fine-tune the fit. Tighten the straps and adjust the rear dial to ensure the helmet stays securely in place during movement. - Proper helmet wearing, with your forehead protected
By following these steps, you can ensure your helmet fits comfortably and provides the best protection during your ride.
Related Articles:
- How to Measure Bike Wheel Size
- How to Choose the Right Bike Seatpost Diameter Sizes for Your Bicycle
- How to Measure MTB Saddle Size?
- How to Measure Bike Handlebar Sizes [2024 Guide]
- How to Choose the Right Bike Stem Size?
- Bicycle Wheel Size Chart: Choosing the Right Wheel Size
Helmet Materials and Safety Standards
The design and construction of bicycle helmets rely heavily on the choice of materials and the implementation of safety technologies. The primary goal of a helmet is to reduce the impact on the head during a crash through efficient structural design and advanced technologies. Understanding the materials and safety standards of helmets can help you choose a more reliable product.
EPS Foam and Shell Materials
Most bicycle helmets use EPS foam (expanded polystyrene) for the liner, a material known for its excellent shock absorption capabilities. It can absorb a significant amount of impact during a crash, thereby protecting the head from injury. EPS foam is lightweight but strong enough to dissipate the force of impact effectively. Additionally, the helmet’s outer shell is typically made from materials like polycarbonate (PC) or ABS plastic, which provide a tough external layer to prevent punctures and maintain the helmet’s structural integrity.
Some high-end helmets may use advanced materials such as aramid fibers or carbon fiber to further enhance strength while reducing weight.
MIPS, SPIN, and Other Safety Technologies
Beyond basic material protection, modern helmets are increasingly equipped with safety technologies like MIPS (Multi-directional Impact Protection System) and SPIN (Shearing Pad Inside). These technologies are designed to reduce rotational forces that can affect the brain, especially during angled impacts, which may lead to concussions or more severe injuries.
- MIPS features a low-friction layer inside the helmet that allows it to slide slightly upon impact, reducing the rotational forces exerted on the brain.
- SPIN, on the other hand, uses special pads inside the helmet that mimic the natural movement of the head, reducing rotational acceleration during impact and providing a similar protective effect.
MIPS (Multi-directional Impact Protection System) technology has become an essential safety feature in modern bike helmets.
How MIPS Works: MIPS helmets include a low-friction layer inside the helmet that allows slight movement between the helmet and the rider’s head. This layer can slide a few millimeters during an impact, reducing rotational forces transmitted to the brain. Although the movement is minimal, it significantly reduces the risk of injury caused by rotational forces.
Certification Standards (e.g., CE, CPSC, ASTM)
To ensure the safety of helmets, many countries and regions have strict certification standards to test helmet performance. Common helmet certifications include:
- CE certification: The European Union’s certification standard, ensures that products meet essential health, safety, and environmental requirements.
- CPSC certification: The U.S. Consumer Product Safety Commission’s certification, ensures that helmets meet basic safety requirements for impact, penetration, and retention.
- ASTM certification: Standards developed by the American Society for Testing and Materials, which test helmets for specific sports to ensure they meet the safety demands of that particular activity.
Helmets with these certifications have undergone rigorous testing and evaluation, meeting the safety standards of their respective regions, making it essential to understand these certifications when choosing a helmet.
Price and brand selection
Price and brand are also important considerations when choosing a bike helmet. Helmets range in price from a basic hundred yuan product to a few thousand yuan at the high end, depending on the helmet’s functions, materials, and safety technology. Generally, more expensive helmets come with more ventilated designs, lighter materials, advanced safety technologies (such as MIPS, WaveCel, etc.), and more ergonomic designs.
In the bicycle helmet market, there are many trusted brands to choose from, each with its own unique design philosophy and focus.
- Giro: Known for its innovative designs and comfort, especially excelling in ventilation and safety technology.
- Bell: Offers a wide range of products, from entry-level helmets to high-end racing models, particularly standing out in the application of MIPS technology.
- Specialized: Its helmets often combine aerodynamic designs with lightweight materials, making them a favorite among professional cyclists.
- POC: This brand is renowned for its distinctive design and top-tier safety technologies, such as the SPIN system, making it especially suitable for mountain biking and extreme sports enthusiasts.
- Falcarbon Bike: It is a brand known for producing high-quality carbon bike components, offering durable and lightweight products designed to enhance cycling performance.