The Bush Business Furniture Accord Mesh Back Office Chair provides a unique workplace seating solution with modern style and features. The cushioned seat with lightweight mesh back offers comfort for all day use, while the ergonomic mid-back design supports the mid to upper back and promotes a healthy posture. Five dual wheeled casters and 360 degree swivel control give the chair complete mobility, so you can move freely throughout your workspace. The durable nylon base provides stability for the chair's tilt mechanism and supports up to 275 pounds. The seat is height adjustable from 18 to 22 inches, and the desk chair also features polypropylene armrests with padded upholstery that can be raised or lowered with the push of a button. The commercial-grade Mesh Back Office Chair is tested to meet ANSI/BIFMA standards for safety and performance and is backed by a 5 year warranty.