Things You'll Need:
- Tape measure
- A bicycle shop with more than 1 type of helmet brand or the time to go to more than 1 store
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Step 1
A basic road bicycle helmetBicycle helmets are fitted by the circumference of the rider's head. It is best to use a sewing kit tape measure. Wrap it around your head about half way up your forehead. Measuring in centimeters is the best way to accomplish this.
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Step 2
Basic mountiain bike helmetSizes for helmets generally fall into these groups: Small is 51 to 55 or 57 cm, Medium is 54 or 55 to 59 or 60 cm, and Large is 55 or 57 to 60 or 63 cm. Youth sizes are generally 50 to 57 cm. The ranges reflect the differences between the different manufacturers. Try on different brands to see which one fits best without a lot of adjustment. All of the helmets have the ability to change the internal band of the helmet to be snug and to accommodate the rider, especially if they wear something underneath to keep their head warm or something to keep the sun out of your eyes.
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Step 3
A basic children's helmetThere are different types of helmets, such as road, mountain, dirt and sport. Whatever the type, it should be comfortable to the rider. There will be a trade off of weight of the helmet and cost. The lighter the helmet, the more it will cost. The other factor is how open the helmet is to airflow. In general, the lighter helmets have more vents and cost more.












