With the UltraFocus 6000, Polk called upon their decades of speaker engineering know-how to create headphones with a smart, ultra-portable design. High-quality components reproduce your music with impressive clarity and detail, while active noise-canceling technology isolates you from noisy surroundings. Just insert these earbuds and press "play" to turn a hectic commute into a peaceful private concert. A handy push-to-hear control mutes the audio and amplifies outside sounds so you can carry on a conversation with those around you without removing your headphones. Along with fantastic sound, a truly great headphone lends itself to hours of comfortable listening. The UltraFocus 6000's silicone and memory foam ear tips come in a variety of sizes, so you can find an easy, secure fit. And the ultra-flexible, ribbon-style cable helps avoid tangles.