Koss KE29P In-Ear, Noise-Isolating Headphones (Discontinued by Manufacturer) 3 sizes soft silicon rubber ear pieces good quality noise reduction Lightweight, in-the-ear earbud design for music on-the-go. Dynamic element for extended frequency response of 15-20,000 Hz Straight dual entry 4 foot cord with inline volume control Convenient carrying case for protective storage Includes S, M and L silicon ear cushions for customized fit