The sierra office chair has a wide seat and contoured back with multiple adjustment features that allow you to always find a comfortable sitting positionthe chair is upholstered in black or blue fabric and features chrome accented swivel base shaped back and contoured seat nylon and chrome base seat height adjustment seat tilt seat slide weight tensioner back tilt arm height and pad adjustment ratchet back height adjustment black or blue fabricmeasurements seat width ndash 510mm seat depth