With SilentSound™ high-parametric noise canceling technology and custom-fit ear cushions, Logitech's Noise Canceling Headphones reduce outside distractions so you can enjoy each word and every note. Large 40mm neodymium drivers produce crisp, dynamic sound when you're in the mood for music, while the detachable audio cable allows you to create a quiet environment when you're not. Perfect for travel, the Noise Canceling Headphones also include an adapter for airplane audio systems and a protective carrying case so you can stow them in your carry-on.