No two people share the same sitting posture, so why should the chairs they use force them to sit a particular way? ReGeneration from Knoll responds to a user’s movements in order to provide the corresponding support. With a plastic base made of 49% recycled content and an aluminum base containing 52% recycled content, the chair is designed for 270 degrees of sitting, with three sides of seat-edge flexibility and seat-depth adjustment. knoll.com