About this itemSpecification 1: United States and has evolved the ideal office chair by researching the positions of workersFeature 2: The lightweight and slim design of the Series 1 (Series 1) provides space saving while also being equipped with a weight sensing mechanism. Automatically adjusts the reaction force of the backrest and the reinforcements embedded in the seat cushion quickly capture the shape of your body, and follow the movement of your body as you change your postureSpecification 3: Adjustment: Seat height/depth adjustment, backrest reaction and backward tilt, lumbar support adjustment, arm height/width/depth/angle adjustment. Casters: Carpet casters4D Arm: Up and down, side-to-side, forward, backward, oscillating arm Support your wrists and arms as you change your posture and help relieve neck and shoulder tensionComes fully assembled. Warranty support information, dedicated contact information includedPlease note that some different sizes may be listed on the product page, but the correct size for this product is 927mm - 1048mm Height: 597mm - 686mm Depth: 533mm - 603mm (base leg: 625mm)