Sony MDR-NC40 Noise Canceling Headphones with Premium Travel Case

The Sony MDR-NC40 Noise Canceling Headphones shuts out up to 80% of the ambient noise around you. Great for work, traveling or just when you're trying to sleep in a loud place, they provide a calming atmosphere no matter where you are. The pressure-relieving cushion offers premium comfort and the lightweight, folding design makes storing them a breeze. It includes a premium travel case and "AAA" batteries.