Riding gears are the essential parts of safe riding. If you don't use any riding gear then you will suffer a lot of problem. If you are a rider then you should use the riding gears such as a jacket, helmet, gloves, boots and hearing protection.
Hearing protection is an important part of safe riding. If you don't use the hearing protection then you will be suffering from noise induced hearing loss. So, you need to use a custom earplugs so that you can protect yourself from wind and engine noise.
See the following websites and get more information regarding the hearing protection..