A collapsible flexible shoulder-borne carrying device includes a dividable lumbar support with a support bar attached to the lumbar support. The support bar extends transversely from the lumbar support at a point of attachment. The upper part of the support bar is rigid, and the lower part of the support bar has a free end that is pliable and bent inward toward the lower part of the lumbar support to provide an open arch. A length-adjustable support harness with fasteners is secured to the free end of the support bar and is secured to a free end of the lumbar support to fasten the open arch in a desired position. A seat cover has at least one safety strap and at least one leg restraint in a lower part of the seat cover. At least one support strap is fastened to the upper part of the lumbar support.