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.