This chair was primarily intended for persons with back problems, many of whom wanted a portable solution.
If the chair is set at a steep seat angle, patients recovering from back surgery could begin to sit almost immediately after surgery. This position was almost as easy on the back as a standing posture. This steep angle can put uncomfortable pressure on the shins, but if this posture reduces the pain in the back this will be of secondary importance.
Multi is not intended to be a work chair, but as an all-round chair it has many advantages.