Block the Water. Not the World.

The best swimming earplugs are custom-molded plugs that seal your ear canal to keep water out and prevent swimmer’s ear. For most swimmers our Hear-Through set is ideal — it blocks water while letting you still hear the coach and your surroundings ($128.95). Full-block, surfing and audio-adapter options are also available; solid plugs start at $105.

Yes — that’s their main job. Swimmer’s ear (otitis externa) starts when trapped water strips the ear’s protective wax and lets bacteria grow. A custom plug that truly seals keeps water out, which is the simplest way to prevent infection, especially for people who get it repeatedly.

A custom plug is molded to your exact ear canal, so it seals far better than one-size foam or putty — keeping water out through laps, dives and waves. An adjustable inner diaphragm equalizes pressure as you descend, so the seal holds.

With our Hear-Through set, yes — it blocks water while letting sound pass, so you hear the coach, your kids and the surf. If you’d rather block noise too, a filtered set lowers sound to a comfortable 28–32 dB.

Very. A custom fit is comfortable and stays put, so kids actually keep them in — and we’re the official earplug provider for the YMCA, protecting young swimmers across the country.

Yes. Our surfing earplugs block water and cold wind and help prevent surfer’s ear (exostosis), the painful bone growth that comes from years of cold-water exposure.

Yes. Our custom H2O and Waterfi adapters seal your waterproof audio player into your ears for music that stays put and sounds clear, length after length.

Each set is hand-built in the USA from impressions of your ears, taken at a provider or with our mail-in kit. They’re reusable and durable, lasting for years of regular swimming.

Every product is backed by a perfect-fit guarantee plus a full warranty and repair program — if the fit isn’t right we remake it, and we repair your Big Ears to keep them serving you for years.