For generously sized seating that is durable, comfortable and attractive, the Pilot(r) task chair is the clear choice. Pilot is warranted to accommodate weight up to 400 pounds, 24/7 for 10 years. Highlights of the Pilot task chair include heavy-duty casters, ultra-durable engineered plastic base, a heavy-duty pneumatic cylinder and a 10-ply seat board. Pilot task chairs are available with loop arms, t arms, or armless. The looped arm is fixed height and fixed width with a soft, radiused aesthetic. T arm adjust 2-3/4" in height and 2-1/2" in width..At first Pilot looks like any other task chair. Look again and you notice that while it is larger and stronger, its transitional style harmonizes nicely with other task chairs in a wide variety of environments.