🎤 Tune In, Zone Out: Elevate Your Sound Experience! Experience unparalleled sound clarity with the ER-15's single filter design. Designed for long wear, these earplugs fit seamlessly into your lifestyle. Tailored for musicians, ensuring you never miss a beat. Fits Westone’s DefendEar Concert (ES49) for ultimate versatility. Stay trendy while safeguarding your hearing with these sleek earplugs. Single filter design Custom fit compatibility High fidelity sound The EtymoticResearch ER-15 Single Filter for Musicians' Earplugs offers a high-fidelity listening experience while protecting your hearing. Designed to fit seamlessly with Westone’s DefendEar Concert (ES49), these earplugs are perfect for professional musicians seeking comfort and clarity.