proprietary ear cushion technology now block more noise before it enters the earcups, delivering an even quieter listening experience and a more comfortable fit. Enhanced sound Outstanding audioincluding deep low notesfrom small, lightweight earcups is made possible by proprietary signal processing and audio reproduction technology. Peace and quiet Even when not listening to music, you can use these headphones to quickly leave the noise behindand relax. When you fly, engine roar fades even further away. Features Quality audio performance thanks to Bose-exclusive TriPort acoustic headphone structure, which features tiny vents in the ear cups to enable a balanced audio performance from small, lightweight headphones. Microphones both inside and out  (less)