The Philips Headphones SHN9500 offer advanced noise canceling technology, excellent passive noise isolation and unsurpassed wearing comfort. A special low dispersion form with protein leather cushions provides supreme wearing comfort with perfect sealing against exterior noise. The headphones are designed for users who travel frequently by plane or train and who appreciate the benefit of enjoying their music in peace. The headphones shut out irritating exterior noise due to built-in special electronics. The headphones can fold flat and come with an attractive zipped travel pouch.