US Patent 8146184 Inflatable cushion having a warming function

An inflatable cushion includes a cushion body and an air nozzle mounted on the cushion body. The cushion body includes an upper surface layer, a lower surface layer combined with the upper surface layer, a flexible pull strap mounted between the upper surface layer and the lower surface layer, and a warming layer mounted on the pull strap and located between the upper surface layer and the lower surface layer. Thus, the upper surface layer and the lower surface layer are isolated by the warming layer and the pull strap to prevent moisture of the ground from being infiltrated through the lower surface layer into the upper surface layer so that the cushion body has a warming effect.