Weight Sensing Synchro-Tilter chair with mesh back and upholstered seat featuring upright position tilt lock, tilt tension adjustment, side activated sliding seat depth adjustment, height adjustable lumbar support and pneumatic seat height adjustment.Five-prong, injection molded fiberglass reinforced Black nylon base with dual wheel carpet casters and fixed plastic loop arms. Rated for users up to 300 lb. (based on an 8-hour day, 40-hour week). Tested to meet or exceed ANSI / BIFMA standards and is compliant with the emissions guidelines set by the GREENGUARD Environmental Institute. Black Mesh Back with Fusion Carbon Fabric Seat. Overall Dimensions: 24.75"W x 23"D x 39.87"H. Backed by Global's Limited Lifetime Warranty.