Abstract: A cargo sling device comprising: a removably attachable strap made from pliable material suitable to fit around a perimeter of a vehicle seat back; the removably attachable strap is used to safely restrain at least one item of interior cargo such as Kleenex®, baby supplies, lunch boxes, groceries, purses and other such items. In certain embodiments the removably attachable strap comprises a one-piece construction and in alternate embodiments comprises a bifurcated construction wherein the removably attachable strap comprises a first end and a second end. The removably attachable strap preferably comprises an elastic material suitable to stretch around the seat back and the secured items. The multi-piece construction embodiment of the removably attachable strap preferably comprises at least one fastener such as a zipper, snap, clip, button or other fastener(s). The fastener(s) may be located in the front and/or the back when installed.