Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great Headphones

A few points--Pros:removable audio cablevery comfortable on my head--Cons:Noise canceling does not reach higher frequenciesThe removable audio cable seems to be a bit weak, and I had to replace on my old pair once (they cost about $5)My previous pair of these headphones broke after 1 year, so I decided to get another pair. They seem very durable, as they were not well treated for that year. The noise canceling is not as good as the Bose headphones which I have used before, but considering how much cheaper these are, it was worth it. The noise canceling cancels out lower frequencies, but fails to cancel out higher frequencies. I recently took these on a plane trip, and found sleeping nearly impossible without these. They are nice because you can remove the audio cable, and just listen to noise cancellation. I would definitely recommencement these headphones to anyone.