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Reebok's Core Series Gymball comes in the three most popular gym ball sizes and is a must have for home exercise. You can find plenty of fit ball videos on the site to follow along to.
The Gym Ball, also known as the Swiss Ball, ensures the body responds to the instability of the ball to remain balanced, engaging many more muscles to do so. Those muscles become stronger over time to keep balance.
The Reebok Gym Ball comes in three sizes and is made from Durable foam PVC. It is Suitable for use on any surface and is ideal for sit ups, back exercises and general fitness.
Reebok Gym Ball includes a Reebok workout dvd and pump.
Sizes Available: diameter 55cm (Sky Blue), 65cm (Champagne) and 75cm (Black)
What size ball should I use?
When seated on a fully but not over-inflated ball with your knees over your ankles your hips and knees should be flexed approximately 90 degrees, positioning your thighs approximately parallel to the floor. Your hips should be level with or slightly higher than your knees.
As a guide
4ft 8ins to 5ft 5ins - 55cm (Colour: Sky Blue)
5ft 6ins to 6ft 0ins - 65cm (Colour: Champagne)
Over 6ft 0ins - 75cm (Colour: Black)
ThinQ Fitness Code: REEBOKGYMBALLBK