12 Best Exercise Balls for Every Type of Workout, ... It only comes in the 65-cm. size, which is generally suitable for people in the 5’7”-6’1” range, according to Wu. 12.

Generally, a ball diameter of 55-65 cm is suitable for individuals under 5'4" (162 cm), while those between 5'4" and 5'10" (162-178 cm) should opt for 65-75 cm balls. Taller individuals may ...