US Patent 7310835 Flexing support in a spa

Systems and techniques to provide a flexing support in a spa, such as a flexing spa headrest. In general, in one implementation, a system includes a surface defining a multi-level recess including a primary recess and secondary mounting recesses, and a pillow including a flexible concave pad and mounts that couple the flexible concave pad with the surface, the secondary mounting recesses receiving the mounts such that the flexible concave pad is suspended above the primary recess, a curved edge of the flexible concave pad contacts the surface, and the flexible concave pad mechanically flexes concavely between the mounts and about the curved edge when force is applied.