In "Fitting Your Bike Helmet", the textual evidence that supports the importance of wearing a helmet is "More children ages 5-14 go to emergency rooms for bicycle-related injuries than with any other sport; many are head injuries." In "Fitting Your Bike Helmet" the National Highway Traffic Safety Administration, tells bicycle riders to buy a helmet, fit it, and wear it every ride. There is a complete description of the steps to take when buying a helmet that fits well. Instructions are clear and very easy to understand.