About this item COMPATIBILITY: Memory foam tips for Sony MDR-XB50AP, XBA-Z5, MDR-EX1000, XBA-A2, MDR-EX1000, WI-1000X, WI-C-400, WI-XB400, and more; provide a comfortable and secure in-ear fit; wont interfere with charging. A SECURE FIT FOR YOUR EAR: Never let your earbuds fall out again. Memory foam ear tips are engineered for a secure in-ear fit, providing a better grip than silicone. Whether youre exercising, working, sleeping, or going about your day, our replacement tips will keep your earbuds from falling out so they can go with you anywhere, to do anything. STAYS IN PLACE: Secure fit and no more lost earbuds; engineered to be the perfect length and shape for optimal in-ear fit, these tips stay securely in your ear, whether youre pounding the pavement or grooving to the music. BIG VIBRANT SOUND: Superior sound; block exterior noise and enhance your bass, creating an exceptional audio experience whether youre concentrating on a call or cranking the tunes. DIMENSIONS: 0.5 x 0.5 x 0