Chairs with a seat tilt adjustment feature a multi-step forward adjustment of the seat surface. This tilts the seat forward a little, which in turn counteracts the tipping back of the pelvis. Learn more now!

The optimum seat depth is defined by the length of the thighs; there should be a space of about three to four fingers' width between the back of the knee and the seat. When adjusting the chair, you should sit directly against the backrest.