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How to Choose and Care for a Bicycle Helmet – Bike Helmet Selection, Sizing, and Use

By Diane Ursu

Choosing the right bicycle helmet may save your life.  Photo: Diane UrsuThey do not necessarily look “cool,” but more often than not, people will scoff at bicyclists who do not wear helmets. Some cyclists even refuse to ride with those who do not wear helmets. Many cyclists have even been in situations involving head impact with the ground, so they understand first-hand the importance of wearing a helmet. There is no question that wearing helmets saves lives, but using the proper helmet size and making the appropriate adjustments are just as important for bicycle helmet safety.

Cheap Bike Helmets versus Expensive Bicycle Helmets

Finding a helmet is easier than most think. Prices do not determine the quality of a helmet; rather, price is an indicator of the complexity of the venting in the helmet, or those holes on top of the helmet. Venting is nice for those who spend many hours in the saddle under the hot sun. They allow more airflow through the helmet which helps wick away sweat along with heat.


Aside from the need for ventilation, color may be an issue. Mountain bikers, for example, may choose bright helmets for greater visibility during hunting season, or road cyclists may want added visibility for riding in traffic.

The average helmet costs $30 to $50, but a perfectly safe, CPSC-certified helmet can be purchased at any price, whether it is for $10 or $200. The US Consumer Product Safety Commission tests helmets for impact and strap reliability, according to the Bicycle Helmet Safety Institute article, “Quick Answers to Your Helmet Questions.” Snell and ASTM are other acceptable certifications for helmets.

Bicycle Helmet Sizing

Helmet size is very important when finding a helmet. Some helmets are one-size-fits all, but these helmets may not work for those with exceptionally large or small heads. Some helmet manufacturers make helmets ranging in size from XS to XL that correlate to the head circumference as taken just above the ears.

When wearing the helmet, it should be low and level on the head, covering most of the forehead. If there is an adjustment at the base of the helmet for the circumference, it should be adjusted until the helmet is snug. The straps should be snug against the chin, allowing only one or two fingers in between. When moving the helmet from side to side, the skin should move with the helmet. A helmet that is too tight may cause headaches.

Store Bike Helmets in a Cool, Dry Place

Heat can damage the helmet weakening the foam and its ability to protect. Helmets should not be left in cars when the sun is likely to heat the automobile interior. According to the Bell Owner’s Manual, helmets should be stored “in a cool, dry place.” Many helmet manufacturers recommend having a helmet inspected or replaced after an impact and will do so if a helmet is impacted within one year of purchase.

It takes time to properly fit a bike helmet and it is worth doing a proper fit the first time using the helmet. The helmet and its adjustments should be checked with each use. The helmet should fit low and level. A bicycle helmet should be replaced after each impact. Helmets should always be worn while bicycling and can mean the difference between getting up, brushing oneself off, and continuing a ride; or taking a trip to the hospital.



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