Shut off the outside world with MDR-NC6 noise canceling headphones.  Ambient sound can be reduced over 10dB at 300Hz, which means you'll hear more music, and less plane, train, or bus noise.  Noise canceling headphones are great for work, traveling, or even when you're trying to sleep in a loud place.  The MDR-NC6 headphones have a slim swivel folding design, making them more compact for storage.  Includes plug adaptor to connect directly to a stereo or dual jack of in-flight music services.