The highly innovative shape of the DYNAMIC "Dyna-Fit Lite" disposable earplug dramatically reduces the level of sound that can be built up in the inner ear when wearing hearing protectors. The innovative channel and cavity design increases the surface area and absorption. The earplug delivers softer accoustics and absorbs noise interference, making it possible to hear speech and warning sounds clearly. Soft foam offer superb comfort, even when worn all day. The inner cavity makes it easy to remove since it's reducing the pressure on the outer wall of the ear canal.