Mid-spinal support with memory foam cushion promotes good posture. Lower lumbar support with three memory foam sections that conform comfortably to natural body curvatures. Microban® antimicrobial protection to keep product cleaner. Innovative Tri-Tachment™ system eliminates the need for readjustment. Fits most office chairs. Back Support Type: Chair; Material(s): Fabric; Polyurethane Foam; Nylon; Plastic; Color(s): Black; Adjustability Features: Tri-Tachment™ System Eliminates Repeated Readjustments.