an inflatable cushion formed from a polygonal material blank including a central body panel and two foldable side panel structures disposed laterally of the central body panel at one end thereof . the material blank may be folded in loop fashion such that the central body panel edges mate with the edges of the side panel structures thereby permitting the formation of a poly sectional cushion including a mouth or other entrance for introduction of an inflating medium and a body portion for holding the inflating medium .