Unique skeletal style chair with breathable mesh back Durable frame is constructed of fiberglass nylon Standard with adjustable height, forward swept arms with “sliding armcaps” Armcaps slide forward to customize arm position and provide support Base and frame are standard in Black All models are standard with a black, urethane arched base Mesh back is available in Black only Pneumatic seat height adjustment Tilt tension control Sliding soft urethane armcaps Rearward seat tilt with infinite adjustment Seat depth adjustment Back angle control Dimensions: 25w x 24.5d x 48 1/2h inches