1. An invalid carrying sling for carrying an incapacitated person in a seated position, said sling comprising a flat, generally rectangular sheet of flexible material, a first plurality of loops longitudinally aligned along one side edge of said sheet, a second plurality of loops longitudinally aligned along the opposing side edge of said sheet, a first rigid elongated handle extending through said first plurality of loops, a second rigid elongated handle extending through said second plurality of loops, the individual loops of said first and second plurality of loops being spaced apart from the nearest adjacent loop by a distance which is sufficient to admit a hand between the adjacent loops for the purpose of grasping the exposed portion of the handle to support the sling, a third plurality of loops attached to said sheet and positioned to slidably receive a flexible belt for attaching said incapacitated person to said sling, and a belt extending through said third plurality of loops, a rear panel made of flexible material and attached at one end to said sheet near the rear edge thereof, one of the loops of the third plurality of loops being formed at the other end of said rear panel whereby the rear panel will be supported by said flexible belt to serve as a back for the sling, said rear panel being foldable flat against said sheet to facilitate rolling the sling about one or both of said handles.