Usage：Foam ear tips fit on 60% of Universal In-Ear Monitors and Earphones ,Tips are premium foam replacement tips that provide an intelligent new way to get a great fit from your in-ear monitors, earphones, and ear buds.Features： 1.Smooth and soft ear tips surface increases comfort and longevity , no swelling feeling. 2.Slow rebound /high fidelity ,Foam material and silicone tube medium recovery foam ensures easy insertion and maximum seal. 3.Noise cancelling and hearing protection. Foam tips can help keep your earphones in place securely and comfortably, and with a good acoustic seal so you can experience the very best sound quality your earphones or in-ear monitors have to offer.