24 Hour/Multi Shift Chair Upholstery:Black Concorde Executive 24 Hour High Back Synchro-Tilter With arms and additional 1' seat depth Accommodates all sizes inluding tall and large persons weighing up to 350lbs Revolutionary push button controls located on the armrests provide state-of-the-art ergonomic adjustment High density, contoured molded foam seat and back cushions conform to natural body curves Heavy-duty tubular steel frame ensures lasting performance 7 position back/lumbar height adjustment Push-button 5 position tilt-lock control Seat cushion with velcro attachment, is easily removed and replaced Perma-Mesh seat suspension provides superior comfort Seat slides in and out to adjust for users leg length Heavy-duty dual-wheel hooded casters Injection molded glass filled reinforced base tested to 5,000lbs Adjustable clearance between armrests Push-button seat height adjustment Heavy-duty mechanism has been tested to 600,000 cycles Heavy-duty sea