Designed for environments found in factories and dispatch offices, dry food manufacturers, hospitals and forensic labs requiring regular and immediate clean up of dust, dirt or powder. Upholstery of any kind is unacceptable in their environment. Features include comfortable black self-skinned polyurethane seats and backs, chip/corrosion/humidity resistant pneumatic lift cylinders and frames, safety casters or glides. GreenGuard Indoor Air Quality Certified.. Wipedown posture chair stool. 5" pneumatic seat height adjustment. Contoured, black polyurethane seat and back. Articulating, hinged back. Seat depth adjustment.