MULTIFUNCTIONAL OFFICE CHAIR: Our chair features 360° swivel, 4-inch height adjustment and adjustable lumbar support. The durable nylon base, breathable mesh back and flexible casters make this chair perfect for everyday office use. Overall Height: 34.2-38.2 (87-97 cm). Height from seat to floor: 15.7-19.7 (40-50 cm) ERGONOMIC COMPUTER DESK CHAIR: The mesh back of this seat is designed to conform to the curve of a person's lower back. We have also added an adjustable lumbar support to suit different people's needs QUALITY MATERIALS: Our office chair is made of high quality materials, including high density mesh, thick and wide foam cushion, high quality pneumatic lift cylinder, sturdy nylon base and 360° swivel casters. It can hold up to 250 pounds of weight to reduce your worry when using it FLEXIBILITY AND SIMPLICITY: This chair is armless and has flexible wheels so you can easily push it under the table when not in use. Reduce the space you need to store it EA