Auckland Transport

How to fit a bike helmet How to fit a bike helmet

The law requires you to wear a helmet when riding a bicycle. It is important to make sure your helmet is the right size, is worn correctly and is standards approved.


To correctly fit your helmet

  1. Loosen all the straps.
  2. Place the helmet squarely on your head making sure it covers your forehead.
  3. Do up the chin strap and make sure it is tight enough so it can’t slip back over your chin.
  4. Adjust the back and chin straps so the buckle on each side sits just below the ear lobe and all straps sit tight on the side of your head.

Key points to remember

  • Ensure the helmet is not tilted forward so that it covers your eyes or tilted to either side so it covers one side of your head.
  • Do not wear the helmet on the back of your head. It exposes your forehead and face and you risk being strangled by the strap.
  • Do not wear a helmet with the straps loose. It won’t stay in place and the straps could catch on something.
  • Do not wear a cap under your helmet. In an accident the cap may cause your helmet to come off.
  • Do not buy a helmet for a child to ‘grow into’.
  • Do not buy a second hand helmet. Even if it looks okay, it may have been damaged.
  • Do not wear a helmet after it has been in an accident or has been bashed. Cracks in the shell, cracked or squashed padding, or frayed straps mean that the helmet may have lost its protective qualities.

Helmets are a secondary safety measure. They do not prevent collisions and should not be seen as a substitute for proper cycle safety training.

How to correctly fit a bike helmet diagram

Correct examples of a fitted helmet

Examples of incorrectly fitted cycle helmets


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