AirBuds Fit-All Foam Tips - For Wired AirBuds (5 Pairs) Fits All Ears: Because of the expandable propoerties of the memory foam, Fit-All Foam Tips will expand to fit any ear canal and will stay put in any situation. Audio Isolation: Fit-All Foam Tips virtually seal off the outside world, keeping the music in and unwanted noise out. Safe Listening: By creating an airtight seal, users can listen at lower and safer volumes. Gentle Comfort: This uniquely designed memory foam forms to any ear canal comfortably and gently, reducing soreness and irratation associated with regular earbud tips.