All of the chairs in the SpinaliS line function on the same principle of active sitting, and are equally healthful and beneficial to you. All are on sturdy wheels and offer adjustable height, and a special ring can be fitted on any of them, as a footrest to accommodate children. Choosing the right chair comes down to your personal choice of the look of the chair, how well the various chair shapes suit your body type, and your budget. We highly recommend trying out several SpinaliS models in person, as this is really the best way to choose the best chair for you. But this interactive software can help narrow your selection.