360° Swivel and Height Adjustable Office Chair 360° swivel mesh seat cushion and wheels. Office chair overall height: 33.1''-37.8''(84-96cm). Chair seat height from floor: 17''-21.7''(43-55cm). Adjustable height range: about 4.7'' (12cm) Ergonomic Mesh Office Chair This office chair built with human-oriented design. C- shaped backrest fits the curve of your spine, upgraded Y-shaped lumbar support provide you with enough support, diminish unnecessary pressure on spine and reduce back pain