SUIEK Swimming Headband - Free Swimming Earplugs a Pair 100% Neoprene Small: (Recommended for ages 0 - 6 Months, Fits head size range 12"-15"); Medium: (Recommended for ages 6 Months - 4 Years, Fits head size range 13.5"-17.5"); Large: (Recommended for ages 4 Years - 12 Years, Fits head size range 16''- 20''). PLEASE MEASURE THE SIZE OF THE HEAD BEFORE BUYING !!! Additional Gift: 1 pair of Silicone Ear Plugs (Swimming headband + Ear Plugs Tie-in use effect is better) Helps Ear Protection: Prevent water from entering the ear canal, Avoid bacteria that cause otitis media, otitis externa and other ear canal diseases Great For Swimming and Bathing: Use at the pool, beach, or lake. Can also be used in a bath or wash hair at home Elastic: Adjustable Velcro closure (They float for easy retrieval)