For many biking is a means of transportation to work, school, and errands. It provides an easy method of exercise and is more affordable than joining a gym or buying hi-tech exercise equipment. Many cities have included biking paths and lanes as well as biking events such as Bike-to-Work Day. Many states require riders wear helmets for safety. But step into a store and it can be overwhelming to know how to choose an affordable and yet quality bike helmet. Need some tips?