The ATH-SPORT7TW True Wireless in-ear headphones will help keep you motivated and moving during your workouts with absolutely no wires to get in your way. The headphones come with four interchangeable sizes (XS S M L) of ergonomic Freebit ear fins to give you a custom and comfortable fit designed to stay in place during physical activity. The headphones also have a certified IPX5 waterproof rating so you can wash the sweat off them and have them ready for your next workout.