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Title: Really does cancel noise.
Review: I was very surprised at their ability to reduce the noise of loud New York subway trains. I wanted something that works and that is not very conspicuous on my ears. I was so happy that it fit my needs, I bought a backup pair so I that I would never be without their protection-- I have ringing in the ears from prior, unprotected exposure to loud noises: esp. those caused by fireworks and trains. It very important to protect against further ear damage.
