Convergence Task Chair offers generous support with customizable features. Swivel-tilt control lets you recline comfortably. Pivoting lumbar adjusts to cradle the contours of your lower back. Thick seat cushions take the stress off the lower body throughout the day. Black seat fabric flexes, stretches and responds to your movements to make the soft foam even more responsive. Arms adjust in height and width to put the support right where you need it. Other functions include pneumatic seat-height adjustment from 15-3/4" to 20-1/8" and 360-degree swivel. Integrated handle on the back makes it easy to move and reposition the chair. Hard, dual-wheeled casters on the durable five-star base move effortlessly on any surface.