For those who work in a noisy cube farm or a loud data center, blocking out background noise is a necessity for productivity. It's also necessary for parents, teens and those who want to ignore the incessant snoring of the guy sitting next to them on the plane. The Audio-Technica Noise-Canceling In-Ear Headphones reduce outside noise by 90 percent while providing your tunes or video sound in crystal-clear quality. And of course, they include an airline plug adapter for those frequent travelers.