Bose(R) in-ear headphones offer a combination of lifelike audio performance and comfortable fit not available from most conventional earbuds. Many owners are already saying how much they enjoy them. Lifelike sound: Proprietary Bose technologies provide a new level of listening pleasure with performance that`s faithful and realistic. Comfortable design: They rest softly and naturally in your ears and feel comfortable even after extended listening. Three sizes of ear tips let you personalize a gentle fit. The shape and soft silicone material of the ear tips allow these headphones to sit in the outer bowl of the ear (not your ear canal); you may even forget you`re wearing them. Bose(R) in-ear headphones are compatible with portable MP3, CD and DVD players. A small carrying case is included to protect them during transportation and storage, and to reduce cable tangling. At just 1 1⁄8-inch deep and 2 1⁄4-inch high by 3 5⁄8-inch wide, the case is small enough to fit in your pocket.