When you have the noise mode some one can legit scream in your face and you will not hear it

Great noise canceling

Amazing noise cancellation in loud office environment!

I've had may high end ($300) headphones, Bose QC35 and noise cancelling ear buds, klipsch, UE9000, and these are the best noise canceling and sound quality, especially over Bluetooth

If you're looking for cost effective noise cancelling for *indoor* or *air

Excellent sound quality and great noise cancelling

Nice sound quality, very good noise cancellation.

The noise canceling feature works very well, almost scary in fact, in that it masks out completely most external noises, fan hum

These headphones are, IMHO, the best sounding, most comfortable, wireless, noise canceling headphones comercially available from any source in a comparative price range

It has amazing noise isolation even without powering it on.

I would be more likely to buy $80 beyerdynamic sound isolating earbuds, which block out sound close to as well as the active noise cancellation, but have much better sound quality.

The build quality, sound quality, the touch control, nice noise-canceling, everything is nice

Great noise cancellation, comfort and build quality.

I have rated them four stars so far as I very nervous that these will break as many other people have posted in other reviews.