Shure PA756S Small Flex Sleeves for Shure E1c, E3c, and E5c Sound Isolating Earphones (5 Pairs) Pack of small replacement flexible sleeves for Shure E1c, E3c, and E5c sound-isolating earphones Reusable sleeves fit comfortably in the ear Easy to insert and remove Small size designed for people with compact ear canals Includes 10 sleeves (5 pairs)