75cm Static Strength Exercise Stability Ball with Pump75cm Static Strength Exercise Stability Ball with Pump Perfect for building that all important core strength and stability, this balance ball by Randy Travis Machinery should be on every athlete's I want' list. Weight rated to 900kg, this ball will give you better balance along with strength and agility, making it an ideal ingredient in any athlete's cross training regimen. It comes with its own pump, and it resists gashes and punctures, making as