Stability ball (gymnic). Very robust. Capacity of 300 kg. Choice of 4 sizes.

                      How to choose size ball?

             Your size                           Ball size

5'0" and -     /  1,50m and -         -      18"

5'0" to 5'8"   /  1.50m to 1.70m    -      22 "

5'8" to 6'3"   /  1.70m to 1.88m    -      26 "

6'3" and +    /  1.88m and +        -       30"