This Listing is for the 55, 65 & 75 cm exercise ball, which is a ball constructed of burst resistant elastic soft PVC. The air pressure is changed by removing a valve stem and either filling with air or letting the ball deflate. It is most often used in physical therapy, athletic training and exercise.
The ball, while often referred to as a Swiss ball, is also known by a number of different names, including balance ball, birth ball, body ball, ball, fitness ball, gym ball, gymnastic ball, physioball, pilates ball, Pezzi ball, sports ball, stability ball, Swedish ball, therapy ball, or yoga ball. It is larger and much lighter than a medicine ball.
Benefits :
A primary benefit of exercising with an exercise ball as opposed to exercising directly on a hard flat surface is that 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,most frequently, the core body muscles. Below is a size chart to help you use your height to select to the correct size. Please note colours of the ball may vary.
Small (55cm) - Best for height up to 5'6"
Medium (65cm) - Best for height 5'6" - 6'
Large (75cm) - Best for height 6' - 6'5"
Various colours available