SIT BALL
Unique "SEAT BALL" Tilt Mechanism
The Ergo-Balance extender can move 11° in all directions. ERGOsp has chosen to place the extender as low as possible, with the result that the movements are easy and gradual (a sitting ball simulation) instead of directly under the saddle which entails fast and possibly uncomfortable movements.
On a sitting ball, your body is constantly trying to unconsciously find the balance so that your back is least burdened. So you sit maximum dynamic and lightly train the core muscles. You have the advantages of a sitting ball, but not the disadvantages.
The extender can be mounted in all models.
The extender cannot be combined with foot control.