The Swap Midback Mesh Chair is a modern chair value-packed with a wide range of functions and top-quality mesh for maximum performance. It is designed to express sporty fashion and urban culture. Functions include multifunctional weight-actuated synchro mechanism with four-position tilt-locking system, seat-height adjustment from 17-1/2" to 21-1/4" , seat-glide mechanism, lumbar support, 360-degree swivel and all-adjustable arms (height, width and pivot) with comfort pads. Dual-floor casters offer more versatility, rolling smoothly on hard floors and carpets. Breathable mesh back; nylon frame with chrome accents; base and fabric-upholstered, cushioned seat are all black. Customize this Swap Midback Mesh Chair with your choice of an optional seat slipcover (sold separately) available in eight expressive colors. Seat measures 19-3/4" wide x 17-3/4" deep. Back size is 19-1/2" wide x 23-1/4" high. Weight capacity is 275 lb.