✔️Block out Water, Let in Sound ✔️Costelo prevents water from entering the ear while surfing and/or swimming. The waterproof membrane blocks the water but allows the sound to come through so you can hear the surrounding. Perfect for Surfers costelo allows the sound to come through while protecting the ears from water damage -- significantly enhancing the overall surfing experience. Prevent Swimmers & Surfers Ear costelo prevents Surfers Ear and Swimmers Ear from developing. Swimmers ear is a painful condition where the skin in the ear canal becomes infected when water gets stuck in the outer ear canal. Swimmers ear typically causes pain, redness, swelling and itchy feeling inside of the ear. Hypoallergenic & Non-toxic Silicone The ear plugs are made from 100% hypoallergenic silicone, perfect for maximum comfort and prolonged use. They do not cause itching or allergic reactions like other plastic or PVC material. Perfect Fit Find the perfect fit from the included 3 pairs of ear tips in small, medium and large, and 3 pairs of ear hooks in small and large. For All Water Activities Carry a set in everywhere! Keep one in your gym bag, car and backpack - Protect your ear with the Costelo and enjoy the water activities that you love.