Ample supportive cushioning in the seat and back deliver ergonomic shaping to fit a variety of body types. Durable plastic ergo core back and reinforced mechanism adds more comfort and overall strength. Wide five-star base with casters provide extreme stability. Recommended Applications: Specialty?Big & Tall, 24/7; Drafting, Warehouse & Industrial?Stools; Seat/Back Color: Black; Arms Included: No; Pneumatic Seat Height Adjustment: Yes.