Do you realize approximately 90% of the fatal bicycle injuries happen in riders that did not use a helmet? The incidence of brain and head injuries in bicycle riders decreases by 60-88% with the use a of properly fitted helmet. The proper fit of a bicycle helmet should have all sides of the head in contact with the inner lining. With the chin strap fastened, the helmet should not slide greater than one inch in any direction on the head. Reflective material for night riders and brightly colored helmets make you more visible to motorists.