Shure SE SE215-K - Single Dynamic MicroDriver Sound Isolating In Ear Earphones, Black Detachable Cable with Wireform Fit Sound Isolation technology prevents outside noise from interfering with your audio experience, whether on-stage or on-the-go Lightweight, low-profile shape with optimized nozzle angle is designed to rest comfortably in the ear Soft, flexible sleeves in multiple shapes and sizes gently contour to your ears. Carrying case also included "-CL" designates the products's color variation (Clear)