Alpine Swim Safe earplugs are designed specifically to prevent water from entering the ear and protect against ear infections and surfer's ear. Ideal when you spend an entire day near, on, or in the water. The special acoustic filters in the Swim Safe earplugs ensure that you can still hear sound and conversations around you. The very small opening in the filters makes sure you do not feel closed off, and the earplugs' shape ensures that water cannot enter your ears. Swim Safe is suitable for a maximum depth of one metre.