Office Factor Ergonomic Mesh Office Chair With Flip up Armrest And Lumbar Support - Big Nylon Base With Swivel Padded Armrest and Two Handle Mechanism - OF-2003 GIVE TO YOUR OFFICE A MODERN TOUCH WITH THIS NICE AND COMFY CHAIR BIGGER BASE FOR GREATER STABILITY DOUBLE CASTERS UPGRADED GAS LIFT FLIP UP ARMS LUMBAR SUPPORT TENSION CONTROL TILT BACK TILT LOCK GOOD FOR MANAGERS EXECUTIVES CONFERENCE ROOMS RATED TO 250 POUNDS