Let Sony's Extra Bass sound drive your workout with their MDR-XB510AS in-ear headphones. Specially designed for sports training, they fit comfortably and securely, and they're water-resistant so you can keep going in all weathers. Extra Bass Sony's Extra Bass range of headphones ramp up the bass frequencies to give your music added power and dynamism. It's perfectly suited to the sports arena, as the enhanced low frequencies give you added drive and motivation. Splashproof These Sony headphones are IPX5/7 rated water-resistant. Read more… Splash and sweat proof, it makes them ideal for workouts, running in all weathers, or even a rinse under the tap. Secure, Connected In-ear ARC supports keep your earphones in place, even during the most demanding exercise. Three sizes of support and four sizes of ear-bud mean you can always find the perfect fit. Plus there's an integrated microphone to allow you to take phone calls on the go, so nothing stops the workout.