Convergence is the ideal chair for any office – a one-seat solution that can do it all. Intuitive, adjustable lumbar support provides lasting comfort during long workdays. It puts just the right amount of pressure on the lower back. With a clean, modern finish, the breathable mesh back panel in black flexes & responds to your movements. Swivel-tilt control lets you recline comfortably. The 3" thick seat cushion takes the stress off the lower body throughout the day. Arms adjust in height & width to put the support right where you need it. Other functions include pneumatic seat-height adjustment from 15-3/4" to 20", swivel & tilt lock. Easily move from workstations to conference rooms using the integrated, full-width handle across the top. Durable frame with a 275 lb. capacity sits atop a sturdy, five-star base equipped with hard casters that move effortlessly on any surface. Seat in black fabric upholstery measures 20" wide x 19" deep. Back size is 18" wide x 22" high.