JVC HA-NC260 Noise Cancelling Headphones (Black) 40mm neodymium drivers produce lifelike audio with a wide frequency response to bring out all of the details in your music Active noise cancellation circuitry constantly monitors your environment and counteracts unwanted noise Unique dual housing structure in the earcups provides a sound-insulating layer Soft memory foam cushions surround your ear to block out additional ambient noise and provide long-lasting comfort Adjustable headband fits virtually any head size