Be able to hear important words in the line-up like "Go!" or "Outside!" or "Beat It Barney!" Surf Ears keep your ear canals dry with the ability to still hear because they have a hole covered by a waterproof fabric. Each set includes a pair of Surf Ears 2.0 size medium, one leash with adjuster, one set small sealing gels, one set large sealing gels and an awesome storage case. But don't worry, you can still pretend like you can't hear when someone calls you out.