The JBL E15 earplugs can be used anywhere. They are lightweight and have a cable that does not tangled up. With the button in the cable you switch between songs and you pause the music. Via the internal microphone you can make hands-free phone calls so that your smartphone can remain in your pocket. Thanks to the extra sizes of caps, the E15 is always comfortable. Thanks to the storage pouch, the earplugs last a long time.