There are two main types of hearing protection: in-ear plugs and over-ear muffs.

For example, if you are using an ear plug with a 30 NRR and an ear muff with a 26 NRR, you would add 5 dB to the 30 NRR for the ear plug. Your protection level would then increase to 35 dB ...

On average, a motorcycle’s engine runs at around 90 decibels, though many bikes can reach over 100 decibels. In the U.S. this is loud enough to require ear protection in the workplace. Even out on the ...