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Child Safety

Take the bike helmet YES Test: How to properly fit a helmet for biking

​​​​​​​​​Wearing a bike helmet every time you ride your bike can save your life. It can also lower your risk of head and brain injury by 69%. It's the law in Alberta that every cyclist under 18 years of age must wear a bike helmet. This includes children in bicycle trailers or carriers.

A properly fitted helmet is the best protection for your head. Below is a checklist to help you buy and fit a bike helmet.​

Buying a helmet for biking

Before buying my helmet:

  •  I know who I am buying the helmet for: myself or my child
  • ​​​Ther​​e are special helmets for children under 5 that provide more protection at the back ​​​​of their heads.​​
  •  I measure around my head at eyebrow level to know what size helmet to look for.​
  •  I decide which type of helmet I need:
  • a bike helmet​, since ​I will just use it for biking.
  • a multi-sport helmet that is approved for biking, since I want a helmet I can use for biking and other activities (such as skateboarding, riding a scooter, or inline-skating). 
  • I will read the helmet manufacturer's guidelines and manuals to know which activities the helmet can be used for.
  • I try on different styles and brands of helmets to find the best fit.​
    ​I check that the helmet is safety approved for cycling and meets safety standards such as CSA, CPSC, Snell, or ASTM.​
    Fitting my helmet
    • I make sure the helmet is level from front to back when I put it on.
    • ​I check that the front edge of the helmet sits 1 to 2 finger-widths above my eyebrows.
    • ​I add or remove sizing pads or adjust the ring fit system to make the helmet fits snugly.
    • If I wear a religious head covering, I adjust my helmet's fit to be sure it doesn't move around when worn on top of the fabric.
    • I adjust the straps to form a “V” just below and in front of my earlobes.
    • I fasten the chinstrap.
    • I adjusted the chinstrap so that there's only 1 finger-width between my chin and the chinstrap.
    • I fit the helmet tighter if it moves when I nod or shake my head.
    Using my helmet
    • I wear my helmet every time I ride a bike.
    • I don’t wear a hat or cap between my helmet and my head.
    • I treat my helmet carefully and never let it drop.
    • I follow the manufacturer’s instructions for how to clean and store my helmet.
    Replacing my helmet
    • I replace my helmet if it's been in a crash.
    • Many helmet manufacturers recommend replacing helmets after 5 years.

    More about bike helmets

    • The manufacturer’s instructions tell you exactly how to use and take care of a helmet.
    • Bike helmets protect riders of all ages. Everyone should wear ​their bike ​helmets everytime they ride. Adults can be a positive role model and help teach children to wear their helmets too.
    • Adults, youth, and children who choose their own bike helmet are more likely to wear it every time.
    • Second-hand or used helmets are not recommended.

    Wear a helmet for every ride. Age makes no difference—helmets save lives!​​​


    Current as of: January 8, 2025

    Author: Provincial Injury Prevention, Alberta Health Services