Earplugs designed for water are the only ones that will insulate your ears from water. At Mundo-Surf , we only sell water earplugs, specifically designed for surfing. You will find two families of surf earplugs: those that insulate the ear from the water, but also block the sound, and those that do not let the water through but do let the sound through. The latter, although they are much more expensive, are much more comfortable for surfing.