Prism Fitness Smart Stability Balls

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The Smart Stability Balls are self-guided for users at all fitness levels. They feature 13 exercises that are printed on the ball for easy reference.

Three sizes available, each are burst-resistant (PVC construction) and includes a pump. 

1/2 Circumference: Inflations Hole to opposite Side of Ball (Injection Spot)

For Diameter 55cm, 1/2 Circumference Should Measure 86cm

For Diameter 65cm, 1/2 Circumference Should Measure 102cm

For Diameter 75cm, 1/2 Circumference Should Measure 118cm