Abstract: An inflatable support cushion comprising a T-shaped cushion component divided into a center space, a first side extension, a second side extension, and a bottom extension, wherein the cushion component can be inflated with air via a valve; and a first joint in between the center space and the first side extension, a second joint in between the center space and the second side extension, and a third joint in between the center space and the bottom extension; each joint being a place where the top surface is bent inwardly toward the bottom surface; wherein the cushion component can be slightly bent at each joint.