Based on where you want to use them, they are offered for sale in many different models. There are variations where you can actually fix them to standard safety accessories like hardhat and protection glasses. Another variation is the one with the mounting placed behind the head instead of the usual which is positioned over the head. This particular type of ear protector is effective if you use a hardhat or perhaps a baseball cap. Aside from the mounting they operate perfectly the same.
Alternatively, if you need a more advanced one, you can have the electronic type which is excellent in cancelling unwanted noise. You can in fact isolate specific frequency that you don’t want to hear without affecting regular conversations and warning chime. That way you can still respond to warning signals from your surroundings such as sirens and fire alarms. They are more expensive than the simple ear plugs but extremely effective and a whole lot safer.
Another excellent example is the Peltor ear muffs for target shooting. There are units that are specially designed for specific application. This type of ear protection is designed to take out the high frequency burst of sound coming from a gun or a shotgun. These kinds of Peltor Tactical Earmuffs are completely adjustable. You can actually set the sound level such that you can still listen to regular conversation while protecting your ears from the loud noise of the shotgun.