Wearing the wrong size helmet can increase your risk of serious injury or death in a crash. A helmet that is too large for your head may be dislodged or knocked off in a crash. To select a helmet that correctly fits your head, follow these instructions:
- Have your head size measured before you try on a helmet. Measure around the largest part of your head just above the ears, taking the measurement at the forehead. The measurement will correspond to a particular size in the model range you are interested in. This is a good starting point. If you want a particular brand or model, do not be tempted to go for another size if yours is out of stock – wait and get the correct size.
Refer to table below to convert head circumference to helmet size (please note this is a guide only).
|Head Circumference (cm)
|51 – 52
|53 – 54
|55 – 56
|57 – 58
|59 – 60
|61 – 62
|63 – 64
- Once you have the helmet in the recommended size, place it firmly onto your head and secure the chin-strap. If the helmet has a quick release buckle, take the time to adjust the strap. Once fitted, you should be able to feel the inside of the helmet against all parts of your head. Once you are happy, wear the helmet for a few minutes to make sure it is comfortable.
- Try to rotate the helmet from side to side with the strap secured. Make sure the helmet does not rotate on your head. The cheek-pads should provide a firm, comfortable fit. Next, tilt the helmet forward and back. It should stay in position and not move. If it slips forward or backwards it is the wrong size and you will need to choose a different helmet.
- Finally, check that the helmet won't come off easily in a crash. Tilt your head forward and have someone try to roll the helmet off your head by carefully applying an upward force to the rear of the helmet at its base. If it can be rolled off in the showroom with the chin-strap done up, it will most likely come off in a crash.