VEVOR Executive Office Chair with Cutting-edge Adjustable Lumbar Support, High Back PU Leather Office Chair Ergonomic for Back Pain, with Padded Flip-up ArmsErgonomic DesignFlip-up ArmrestsQuality You Can TrustVersatile AdjustmentsExquisite Taste, Superior ComfortHigh-Quality DurabilitySeat Width: 510 mm/20 inch,Height Adjustment: 0-100 mm/0-3.93 inch,Thickness of Cushion: 125 mm/4.9 inch,Wheels Material: Nylon,Armrest Style: Flip-up, Detachable,Weight Capacity: 300 lbs,Seat Depth: 500 mm/19.6 inch,Item Model Number: GF-82727H,Product Weight: 19.75 kg/43.5 lbs,Backrest (HxW): 27.5x20 inch/700x510 mm,Lumbar Support: Adjustable; Material: PU Leather + High-Resilience Sponge; Size (LxW): 420x340 mm/16.5x13.3 inch,Product Size(LxWxH): 680 x710x1090 mm/26.7x27.9x42.9 inch,Armrest Size (LxW): 250x75 mm/9.8x2.9 inch