Ergonomic Design: The overall design of this office chair is ergonomic, lumbar supports on the backside of the chair back are not only for beautiful looking, when you lean in the chair, it feels comfortable like two hands are supporting your waist, this chair can effectively relieve the back pain that caused by long hours of sitting, this will be a very wonderful experience for your use. Thicker Cushion Double Comfort: Compared with other ordinary office chairs, the cushion of this office chair uses high-density elastic sponge, which is softer, thicker and more comfortable with certain fire retardant function. The swivel chair structure design can not only ensure stability and durability of the seat, but also double your comfort in daily work. High-Quality Materials: In order to enhance customers experience when sitting in the chair, we adopt better materials to improve the comfort and stability of the chair. High-quality surface with smooth texture and better breathability. The high grade of gas lift is certified by SGS, and the maximum support capacity is 265 pounds. The passed leg base, ensures stableness and safety when sit. 360-Degree Movement: The height of the seat can be adjusted using the handle at the right bottom of the seat, meet different heights of desks. The office chair uses smooth casters, and 360°horizontal rotation without resistance makes you free to choose which direction or point of view you want to, it is quiet and the soft PU material casters protect your favorite hardwood floor, carpets and other mats. Easy Assemble Office Chairs Clearance: With clear instruction, our supportive office chair for desk can be easily assembled with a single tool in 30 minites. The certified sturdy work chair meets the requirements for durability and stability. Best customer service is provided to our highly rated rolling computer chair, feel free to contact us if you meet any problems.