Web Price: $15.99
The rip:60™ StayBall is designed for a dynamic, weight-shifting workout to add variety and intensity to your training. Two pounds of sand have been added to the ball for added weight. It also helps keep the ball from rolling away between exercises. Use the StayBall to work your upper body, lower body and core. Twice as thick as regular exercise balls, the StayBall offers more durability and strength for a dynamic, elite workout.