The distinctive feature of the Sylphy office swivel chair is the excellent seating comfort for every body type provided by the horizontally adjustable curvature of the backrest in connection with its improved support for the back. The upholstery has a three-dimensionally curved grid shell structure, which ensures flexibility in combination with the elastic back support frame. The seat upholstery is composed of three polyurethane types of different densities, which reduces pressure on the thighs and at the same time supports the hips.