Street style, portable convenience Take to the streets in style with the MDR-XB450 headphones. Designed for portability, foldable earcups mean you can pack them away easily, while the serrated cable resists knots and tangling. Powerful bass 30 mm Extra Bass drivers deliver powerful sound, despite their moderate size and weight. Delivering deep, clear audio The expanded low frequency range means that percussion, bass, and sub-bass come through strong. Get the bass you crave from 30 mm XB driver units Enjoy enhanced bass with the balanced rigidity and high response Extra Bass Diaphragm, which maintains powerful performance through hours of listening.. Extra-comfort ear pads The earpads provide wrap-around comfort with an improved acoustic seal, as well as powerful bass. Pack and go A swivel design in the housing allows you to lay your headphones flat, making them easy to carry. Tangle-free cable A durable, finely grooved serrated cable reduces tangling.