Features a ratchet back with breathable mesh detail for maximal comfort. Mesh is made of high-strength elastic nylon for durability Ergonomic design supports the natural curvature of the back, promoting proper posture Cushioned fabric seat and chrome footring provide optimal comfort and convenience Pneumatic seat-height adjustment (25-inch to 35.4-inch), 360-degree swivel, and back-height adjustment for flexibility Included arms are adjustable in both height (32-inch to 42.5-inch) and width (24-inch to 26-inch) for customized comfort 25.5-inch diameter, five-star steel base with a polypropylene cap and casters enables effortless mobility Weight capacity: 250lb.