Shut out the world and lose yourself in your music ® or let the world in. It's your choice with the first in-ear noise cancelling headphones from Bose. The QuietComfort® 20 Acoustic Noise Cancelling® headphones 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 to hear what's happening around you. StayHear®+ tips provide a soft, secure fit.