When looking for dynamic headphones, Koss Pathfinder is the ultimate choice in sound and noise reduction. Not only do these Pathfinder headphones decrease ambient noise, but they also enhance isolation to ensure that they produce clear and sharp sound. These black in-ear headphones by Koss have a slow memory ear cushion, which is made out of hydrophilic formed urethane. This allows the Pathfinder headphones to have a more custom fit for comfort and ease. In addition, the bass produce by the Koss Pathfinder has a deep sound and the treble is crystal-clear due to the ear cushions made from the same soft foam material. A tubular port structure on these in-ear headphones is connected to an outside dynamic element with the audiophile's listening pleasure in mind. With a black or white cord option, Koss Pathfinder can match seamlessly with most multimedia players. Music aficionados will surely enjoy the sound quality and sturdy construction of these headphones.