a posterior walker is disclosed comprising : a foldable , tubular frame ; adjustable handles ; wheels , including anti - rollback wheels in the back and pivoting wheels in the front ; a flexible , adjustable lower back support strap ; features to adjust the handling and stability of the walker to meet the mobility and standing needs of persons with unsteady gait and standing posture , namely an adjustable weighting means ; and optionally backpack storage . in one embodiment , the adjustable weighting means is provided by use of weighted stability cuffs .