An apparatus for stabilizing, with respect to a grounded surface, an infant standing on a horizontal surface, the apparatus comprising: a grounded support structure configured for transmitting a ground force from the grounded surface; an outer support structure, operably coupled to the grounded support structure, configured for receiving the ground force and transmitting an outer support force; a connecting structure, disposed inside and operably coupled to the outer support structure, configured for receiving the outer support force and transmitting a connecting force; and an inner support structure, disposed inside and operably coupled to the connecting structure, configured for being disposed around the torso of the infant and for receiving the connecting force and transmitting a stabilizing force to the infant, there being no obstruction between the inner support structure and the horizontal surface.