• No damage or pain. Ultra comfortable: exclusive design and material. • Great waterproofing: unique design structure, 2-layer waterproof flanges. • Safe in all aspects: one-piece design, resistant to high temperatures. • Sound hole: allows you to hear warning sounds from the environment. • Adjust the swimming plugs to their correct size. • Use the plugs during swimming or water activities. • Ensure the plugs are well-fitted for maximum waterproofing. • After use, clean them with warm water and let them dry.