Research has shown that bicycle helmets can reduce the risk of serious head and brain injury in all types of bicycle incidents by as much as 88 percent. Cyclists who wear helmets are 14 times less likely to be involved in a fatal crash than those who do not wear them. It's important to choose a helmet carefully and to make sure it fits properly. Look for a label or sticker that says the helmet has been tested and meets the new federal safety standard issued by the U.S. Consumer Product Safety Commission. Select a brand and size that fits well prior to any adjustments.
Most helmets come with adjustable sizing pads to help ensure a better fit.
A properly adjusted bicycle helmet fits comfortably and securely. It should be worn level on the head, not tilted back on the crown or pulled low over the forehead. Once the helmet is adjusted, you should not be able to move it more than an inch in any direction. Do it when your child is relaxed and you have plenty of time, not when you're in a hurry to go outside and ride. Once the adjustments are made, you can secure the straps so the helmet will be ready for the next ride.