Alday Intensive-Use Chair, Supports Up To 500 Lb, 17.5" To 20" Seat Height, Black 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 with back tilt adds more comfort and overall strength. Wide five-star base with casters provide extreme stability. Rated up to 500 lbs. and 24/7 use. Available with height and width adjustable T-pad arms (Sold Separately).