Abstract: A chair includes a support spine. A seat assembly is coupled to the support spine, and the seat assembly includes a flexible frame being movable relative to the support spine. The flexible frame comprises a first frame element, a second frame element coupled to the first frame element at a first corner, and a third frame element coupled to the second frame element at a second corner. The first corner and the second corner are substantially independently movable relative to the support spine. A conformable panel is coupled to the flexible frame and configured to engage an occupant of the chair. A resistance assembly couples the support spine to the flexible frame. The resistance assembly bears against the flexible frame to facilitate substantially independent movement of the first corner and the second corner relative to the support spine.