Shure SE215K Translucent Black In-ear

Sound Isolating Earphones were originally developed as Personal Monitor Systems to allow musicians to hear their own performances in loud onstage environments.

They work by using soft, flexible sleeves to block up to 90 % of the background noise. You can concentrate on your music, whether you are on-stage, in a train, on the street or working out. At the same time you can reduce the audio level to conserve your hearing.