Features breathable mesh fabric seat with ample padding. The open mesh high-back is designed to offer lumbar support. Height adjustable arms accent the chair, while the 3 paddle mechanism allows the seat and back to lock in any position throughout the tilt range, with seat height adjustment. Nylon reinforced 27-inch base provides great stability and dual wheel casters allow for easy movement. Dimensions: Arm Height: 26.5-inch - 32.5-inch H, Seat Size: 18-inch W X 21.5-inch D, Seat Height: 19-inch - 22.5-inch H, Overall Dimensions: 28.5-inch W x 27-inch D x 39.5-inch - 43-inch H. Assembly instructions also available at www.bosschair.com.