The Nike Pull Buoy will aid you in your swim training sessions. Designed to be held between the legs, the pull buoy will raise your body in the water and enable you to concentrate on your upper body technique. Dimensions: L23 x W17 x D10cm Benefits of using a Pull Buoy Improves Body Position: The buoyancy of the pull buoy brings your hips higher up in the water and teaches your body to swim more horizontal and streamlined which will increase your efficiency, speed and endurance. Maintains balance so that you can focus on your arm stroke. Improves breathing technique: Helps you to develop a bilateral breathing rhythm as you swim more relaxed and easily when you are not kicking. Builds upper body strength: As your legs are not being used, you isolate your upper body muscles and, over time, will increase strength in your upper body. You can use a pull buoy in conjunction with hand paddles for a more challenging work out for your arms.