Koss UR29 Headphones

A portable headphone is a headphone that is used on the go. Portable headphones tend to be smaller, more lightweight, and may have features that lend themselves to listening on the go, like carrying cases or collapsible headbands.PRODUCT FEATURES:Dynamic element for extended frequency response;Volume control feature for convenient sound adjustment;Collapsible design for protective storage and maximum portability when listening on the go;Behind-the-head design for maximum comfort during extended wearing periods;Foam ear cushions for open, hear-through sound.