Pool & Open Water earplugs designed to keep the Sound In and the Water Out! Unlike regular swimming ear plugs that block out all the sound along with the water. These ear plugs contain acoustic filters with an advanced mesh that prevents water from going into your ear canal whilst not obstructing sound coming in. They keep your ears protected without affecting your hearing or balance. With these ear plugs in, you will be able to hear all sounds and signals. And you will have full situational awareness, whilst your ears remain shielded from water and cold wind. EAR TIPS4 x interchangeable sizes for the best fitThe smallest size is only 8mm in diameter, suitable for children OCEAN EARS COREAmplifies acoustics into the earCustom fit ensembleACOUSTIC COREShields your inner earMaximizes hearing by attenuation of low frequencies SAFETY CORDNever loose your Ocean Ears ZIPPED CLAM SHELL CASEKeeps your Ocean Ears safeEasy to find storage pocket with carabiner