Polk Audio"s new UltraFit Sports Headphone Series is a rethinking from the ground up of performance, comfort and durability - the three characteristics serious athletes need most in a pair of headphones. Serious music lovers too will value the UltraFit Series because of its undeniably impressive sonic performance. The UltraFit 2000 is an on-ear design for anyone uncomfortable with ear buds or in-ear headphones. The headphones" SecureFit support ensures a snug yet comfortable fit. The headphones also afford light noise suppression, so you"re more aware of your surroundings. On-ear 3 button control and in-line microphone enable you to use your iPod or iPhone.