OVERVIEW: Shut out the world and lose yourself in your music or hear what's around you. It's your choice with the first in ear noise cancelling headphones from Bose. Quiet Comfort 20 Acoustic Noise Cancelling headphones are engineered to let you enjoy better sound every day, everywhere you go. Turn on noise cancelling to reduce surrounding distractions and focus on your music. Or, at the touch of a button, activate aware mode so you can hear what's happening around you without removing the...