Aqua Sphere Classic Pull Buoy The Aqua Sphere Classic Pull Buoy is a great way to build you upper body strength in order to be a better swimmer. You can use it at the pool, lake, or beach as you work your way up to a higher swimming level. It immobilizes your legs so that you can focus on upper body performance. It isolates your arm motion in order to promote better stroke form. The buoy is made of a very strong closed-cell foam that will not get saturated or waterlogged. It is very durable and lasts a very long time, giving you many hours of workouts. This great buoy helps you keep a proper body position for better exercise results. Plus, its bright yellow color is easy to see even from far away, making it readily identifiable. The Aqua Sphere Classic Pull Buoy makes your daily routines more effective and enjoyable.