Comply Foam Premium Earphone Tips - Isolation T-500 (Blue, 3 Pairs, Medium) Multiple models (100, 200, 400, and 500) to fit all earphones. Breathable Memory Foam for Supreme Comfort Secure, stay-in-ear fit for extended wear Superior noise isolation for private listening Flexible core to fit most earphones Fits select earphones from Ultimate Ears, Sennheiser, Woodees, and more