The best road bike helmets cover a range of prices from budget cycling helmets to expensive top-spec helmets used by the pros. They're an essential piece of safety equipment for cyclists.

On April 1, Japan introduced an ordinance encouraging all bicycle riders, regardless of age, to wear helmets. The measure goes into effect amid a growing number of accidents across the country.

To help you buy a cycle helmet for adults, here are the best options available ... Exclusky Mountain Bike Helmet MTB Bicycle Cycling Helmets for Adult Women and Men CPSC Certified.