Why a kneeling chair?
If you haven’t been successful in preventing back pain, an ergonomic kneeling chair could be the right solution for you. They allow the user to sit in a position with the thighs dropped down at an angle. Actually the body is still sitting in a kneel chair, but the weight is redistributed slightly onto the shins and knees, away from the thighs and buttocks, whilst allowing the feet to provide balance.
Since they promote correct posture and regular movement, they provide comfortable, fatigue-free sitting and make it possible for you to work at your desk without strain.