Mid-back swivel chair features a mesh back that provides superior comfort with contemporary split "Y" design, adjustable lumbar support and air circulation. High-density, highly resilient, molded foam covered with high-quality, dark blue fabric offers more comfort and will retain its ability to support far greater than standard-cut foam. Frame and base are black. A single-lever control provides one-touch, seat-height adjustment and adjustable tension so you customize the chair position to meet your specific preferences. Synchronized tilt control provides reduced front edge rise while reclining. When desired, a convenient back lock prevents the back from reclining. Height-adjustable arms with soft pads provide comfort and support in all tasks. Fiberglass-infused, reinforced nylon base with high-performance casters delivers strength, support and comfort. Weight capacity is 250 lb. Chair exceeds ANSI\/BIFMA standards and is Greenguard Certified.