All-Weather ComfortMade of high quality breathable and soft mesh fabric and high quality structure sturdy and durable material structure, ergonomic curve design makes this mid back office chair fit your back better, breathable mesh backrest can keep you comfortable and avoid back sweat when sitting for a long time. Easy OfficeThis adjustable swivel chair's sturdy backrest frame can support the natural curve of the human spine, seat height can be easily adjusted, soft lumbar support pillow close to the human body's most adaptable state can alleviate lumbar pressure, bringing you the ultimate in office comfort. Function and DesignErgonomic design helps the backrest has prominent lumbar support to help you maintain a relaxed posture during long hours of work or study, comfortable mesh with back support points can fit the natural curvature of the spine, the armrests of the computer chair can provide comfortable support for the arms, and it can be flipped up when not in u