Ergonomic Design Office Chair: The ergonomic backrest and lumbar support fit the natural curve of your lower back, take the pain of spinal away from your body. It provides comfortable support which helps you to maintain a relaxed posture in a long hours of work..Desk Chair with Flip-up Arms: The Adjustable armrests can move up and down and the comfortable armrests can relieve the discomfort of the elbow area. After use, you can retract the arms and put the ergonomic office chair under the desk to save space..Maximum Comfort: The computer chairs have a soft high-density sponge seat, which is covered with durable breathable mesh fabric and has good elasticity, and is difficult to deform to keep them comfortable for long hours..Multi-Function: The height of the chair can be adjusted according to demand. It also features 360-degree rotation. Height adjustable from 18.5 to 22.2 inches, matching different stature. Weight capacity: 250lb..Easy Assembly: The office chair comes with all hardware & necessary tools, and can be installed within 15 minutes. It can be quickly installed at home by yourself. We also have a professional customer service team, so if you have any questions, please do not hesitate to contact us. We are always with you.