These are used to prevent water from entering the ear. Swim protectors are medically necessary when there is a perforation of the eardrum, ventilation tubes or a chronic ear disease.
These plugs are specially made to reduce sound by a given amount of decibels (dB). Typically, the reduction is either 9, 15, or 25 dB. The sound is reduced by a given amount across the auditory spectrum. This means that the quality of the music is not altered by the plug… only that the sound is reduced in amplitude. An ordinary earplug will reduce high notes more effectively than low pitched notes. This will give the listener a very bassy sound, with little of the sharper qualities of the music. For more info please click HERE.
These are custom plugs which fit the ear and block out as much sound as possible. Uses include construction, noisy concerts, streets and subways, and noisy neighbors.