A unique and fantastic product. The noise cancellation is excellent, as well as audio quality. This product has been on the market for years, and I've never seen anyone using them. Can't understand why. On an airplane, they are most effective. I'm able to hear a full range of music, at a reasonable and safe volume levels, while eliminating at least 90% of the cabin and engine noise. Fits well and comfortably in my ears for hours at a time. At first, the cords can be a bit cumbersome, but after a few times, you get the winding and unwinding method down. The battery life is hard to believe! One AAA battery lasts at least a dozen flights. Would it be better if it had bluetooth and a built-in mic?...sure, but for the money, they can't be beat! I've used a lot of headphones in my time, these are at the very top of my list for traveling.