... nylon base,Y-19 mechanism, back tilt, seat height adjust,high quality, competitive price. Chair description:1.material: PU upholstery, ... :Size of back: 52x77CMSize of seat: 51x52CMHigh of Seat: 45~53CMSize of Chair: 62x66x115~123 Base: 350mm powder coated base ... be sewed on each chair.2. Elegant design, excellent workmanship3. high quality , competitive price, durable. Quality control:1.Have strict ...