
A good fit is crucial so that in the case of an accident, the helmet remains in place and protects the head. Straps must be snug and the helmet positioned correctly. Once it's properly adjusted, only minor adjustments are likely to be necessary thereafter. Some specifics:
The front of the helmet should be level and no more than one or two finger widths above the brow.
The helmet should fit snugly, with the head partially compressing the soft foam pads inside, even before the straps are tightened. Select the size that fits as closely as possible without being uncomfortably tight. Then use the sizing pads to fine-tune the fit. (See more Fit tips at www.SafeKids.org.)
The straps should form a "V" under each ear.
The buckle should be centered under the chin, not to the side or along the jaw. The straps should be snug enough that the helmet is pulled down when the mouth is opened. If the helmet is tipped back or the straps are loose, it will not provide suitable protection in an accident. To avoid pinching, have your child lift her chin up slightly to pull the skin taut. And consider a model with a pinch guard.
Straps might shift over time. Periodically check the tension and the position of the straps. If the helmet shifts when pushed, take the slack out of the chinstrap.
Head sizes and shapes vary. If a helmet can't be adjusted to stay on your child's head, try a different model. Try several sizes, models, and brands until you find the best fit for your child.
Statistics show that as children age, they are less likely to wear a helmet. Parents should enforce helmet use without exception, even on short rides, and wear helmets themselves to set a good example for their kids. (Read more on adults' use of helmets at ConsumerReportsHealth.org.)
Bike helmets should be replaced every five years, or sooner if the manufacturer recommends it, because the helmet's materials may deteriorate. As your child grows, you might need to replace helmets more frequently. If the helmet has been worn in an accident, replace it, even if it does not appear to be damaged.
If our rated models are not available, look for a label or sticker on the package that says the helmet meets the CPSC Bicycle Helmet standard.