Summary: I wanted noise canceling headphones to use when flying and didn't want to spend a fortune. I can't compare it with others (as I didn't try any), but these are working fine. I was skeptical about the the size that sits on top of ear rather than surrounding it, but it is OK.
Summary: Anti-noise (or noise cancellation) is used in military headphones (for aircraft etc.) Theirs works, hopefully. This example does not. I tested it in front of a television - made little detectable difference. Waste of money - I sent it back
Summary: They worked well at first however they didn't last long as the quality wasn't as high as the price tag on this item. I would only recommend if you are extremely careful with them as they are delicate.