With repeated use of the Ear Shield hearing protection, the foam cuffs may become worn, torn or become difficult to get a good seal. To replace, simply pop off the old cuffs and replace them with a new set. The replacement cuffs for the Ear Shield fit both the 26dB and 31dB models. Includes 2 pairs of replacement cuffs. Impervious to mold, mildew and bacteria and can be cleaned with mild soap and water.