55cm Black Exercise Stability Ball - 21.65" Diameter Inflatable Yoga Ball for Home Gym Workouts, Resistance Exercises, Balance Core Strength Training | Titan Fitness
Gorilla Sports Gym Fitness Ball / Swissball - 65cm - Black – GorillaSports AU
Black Mountain Products Professional Grade Pro Series 1000Lbs AntiBurst and 2000Lbs Static Weight Capacity Exercise Stability Ball, Black, 45 cm : Amazon.com.au: Sports, Fitness & Outdoors