Your question was: How do I know what ball size to recommend?
Our experts said: The size of the ball should be based on the height of the person. Proper ball size allows a person to sit upright on the ball with the hips and knees bent to 90 degrees. The following chart provides a guide to follow; however, there may be individual differences due to variations in leg and trunk height:
|
Height |
Ball
Size/Color |
|
4"
7' - 5" 0'
(140 - 153 cm) |
45
cm / yellow |
|
5"
1' - 5" 6'
(155 - 168 cm) |
55
cm / red |
|
5"
7' - 6" 1'
(170 - 185 cm) |
65
cm / green |
|
6"
2' - 6" 8'
(188 - 203 cm) |
75
cm / blue |
|
Over
6" 9'
(205 cm) |
85
cm / silver |
|