Sony's EP-EX1 Spare earbuds for EX Series headphones (3 sizes).
Spare earbuds to fit your MDREX32LPB/P, MDREX51LPW/B, MDREX52LPB/W, MDREX71SL, MDREX75SL, MDREX81SLB/W, MDREX85LPB, or MDREX90LP earbud style headphones.