Beautifully upholstered in black LeatherPlus. LeatherPlus is leather that is polyurethane infused for added softness and durability. Passive ergonomic seating with built-in lumbar support. Padded armrests covered with Caressoft™ upholstery. Large 27" nylon base for greater stability. Hooded double wheel casters. Upright locking position. Pneumatic gas lift seat height adjustment. Adjustable tilt tension control. Comes standard with knee-tilt mechanism. Black finish. Black frame. 27"W x 28-1/2"D x 43-1/2 - 47"H overall.