Abstract: A torso support portion and a pair of thigh support portions are each formed of an outer layer of hard relatively stiff molded plastic material of limited flexibility and an inner layer of relatively soft cushioning material for distributing the weight of a patient over a large area. The torso support portion may comprise a rear panel adjustable secured between two body panels. Tightening straps serve to tighten the torso support portion about a patient with the parts of the torso support portion adjacent the front opposite free sides of the two body panels overlapping one another in operative position. A pair of tightening straps serve to tighten each of the thigh support portions about the thighs of a patient with the free sides of each thigh support portion spaced a substantial distance from one another in operative position. Four adjustable suspension straps are provided for suspending the torso support portion and provide a quick-release feature.