These water ear plugs have a silicone design that creates a watertight seal. Perfect for swimming , shower and other water sports. The main features of the Protechs Swim Ear Plugs include: Water Tight Seal - The ear plugs completely seal out water from the ear preventing ear infections, swimmers ear and clogging. Comfortable Fit - The earbuds are made out of a comfortable silicone that is easily compressed for insertion and fits comfortably in the ear.