great product. greatly reduces the amount of background noise when noise canceling is active. is is especially good for low frequency sounds eg when in a bus, on a plane or in a car.

Never been happier to find a small in-ear that eliminates unnecessary noises in my travels; air & train.

I recommend it.

Pretty mighty little guys. They cut off low frequency noise only and you truly notice that immediately after switching to ON. So, you still hear voices of those around you, telephone ringing, etc. They pump rather clear sound, a bit weaker than generic ear buds, but surely wider in the scene. I would say these are worth the try. I will definitely test them in the subway and on board the plane some time later. Recommended for use.