For maximum benefit, the exercise ball should be sized according to an individual's proportions.
Especially long-legged or heavy people may benefit more from the next larger size. The following guide is used as a reference for seated position usage. Hips and knees are to be bent to 90 degrees when seated on the ball.
Height under 140 cm or 55": 30 cm or 12" ball
Height between 140-150 cm or 55"-60": 45 cm or 18" ball
Height between 155-165 cm or 61"-66": 55 cm or 22" ball
Height between 170-180 cm or 67"-71": 65 cm or 26" ball
Height between 183-190 cm or 72"-75": 75 cm or 30" ball
Height over 190 cm or 75": 85 cm or 34" ball
For more information or pricing, please contact Forever In Motion.