Thick padded seat and back with built-in lumbar support, Waterfall seat reduces stress to your legs, Back height and depth are fully adjustable, Pneumatic seat height adjustment, 5 star nylon base allows smooth movement and stability, Wild/adjustable arms, Hooded double wheel casters, Dimensions: Arm Height: 26-inch - 33-inch H, Seat Size: 17.5-inch W x 16.5-inch D, Seat Height: 18.5 - 23.5-inch, Overall Size: 17.5-inch W x 25-inch D x 35-inch - 40-inch H