Tervis NFL New England Patriots Super Bowl Champions 24 oz Tumbler with Lid THE ORIGINAL SWIMMING HEADBAND. Invented by an Ear, Nose, Throat Physician and designed to block water from entering the ear canal while engaging in water activities. RECOMMENDED BY DOCTORS WORLDWIDE. GOOD SIZE SWIMMING HEADBAND: The right fit is important, snug but not too tight is the goal. The Phytnis swimming headband size chart was updated in 2018 and should now work for most, and we will send you the right one. MEDIUM  Should fit kids 3 years old and up. LARGE: Should fit most adults. MADE of NEOPRENE SWIMMING HEADBAND: Neoprene is commonly used in fly fishing waders and wetsuits; it is a durable, low-maintenance material and provides some insulation against cold. OUR SWIMMING HEADBAND HELP PREVENT EAR INFECTIONS and SWIMMERS EAR. Use to block water from entering the ear canal. Guaranteed ear protection. Perfect for ear tubes, perforated eardrums, myringotomy, myringotomy tubes, otitis media, and otitis externa. HAPPY SWIMMERS with OUR SWIMMING HEADBAND: Another layer of protection, ear infections can suck the joy out of epic swim days. The Phytnis Swimming Headband can help!