High-back swivel chair features a heavy-duty mesh seat and mesh back that provides superior comfort with contemporary "Y" design, adjustable lumbar support and air circulation. Integrated seat slider lets you set the seat exactly where you want it. Two-paddle control provides one-touch seat-height adjustment and five back-lock positions that let you adjust the chair to meet your specific preferences. Synchronized tilt control provides reduced front edge rise while reclining, and a convenient back lock prevents the back from reclining when desired. Fiberglass-infused, reinforced nylon base with high-performance casters delivers strength, support and comfort. Adjustable arms are sold separately. Weight capacity is 250 lb. Chair exceeds ANSI/BIFMA standards and is Green-Guard Certified.