The first universal ear plug for both noise and swim ear protection with the patented CeramX filter. A technological breakthrough in ear protection and safety. Both adult and children sizes in one box More sanitary than wax or putty plugs No annoying ear residue Patented ceramic filter seals out water, but allows in voice for safer water activities Reduces harsh noise while allowing normal conversation Bonus pack for better value Each pack contains 2 pair - 1 adult size and 1 children's size