The PRO filter series has been designed anew with the wearer in mind. For starters, it’s smaller than many competing filters, which means it can fit into smaller ears without any protrusion – which is great for both comfort and aesthetics as it will always fit snugly underneath a helmet. The filters are also user-swappable so you can chop and change as your environment demands to any other filter in the PRO range, giving you complete control over your protection with just a single set of earmolds. In addition, the PRO series are water resistant so they can be used outside or in high moisture environments and can withstand perspiration without it damaging the filter membrane.
Trying to create a natural sounding earplug is no mean feat as far as your own voice is concerned. As you may have experienced, when you block off your ear canal your own voice starts to boom inside your head (this is what we call occlusion). This is caused by sound that is carried to your ear canal through the cartilage at the side of your head which usually escapes through the open ear canal so is not heard. When we block off the canal this sound cannot escape and so creates that booming effect.
A large amount of occlusion can be eliminated by ensuring that the earplug sits deep enough into the ear canal to extend past the cartilage. This is ensures that the sound hits the plug and is deadened rather than entering the canal at all. The PRO filters go one step further by being vented to allow sound to pass both ways. This means that remaining sound can escape directly through the filter providing one of the most natural sounding earplugs available.