Vacuum-formed to reduce liquid and bacterial infiltration. Ergonomic for complete comfort. Features Saddle-shaped, contoured seat with waterfall front: 21" wide x 19" deep x 3" thick 15½" wide x 14½" high backrest with lumbar curve and height and tilt adjustment Soft Touch pneumatic seat-height adjustment, rearward seat tilt, backrest tilt and height adjustment Available in Slate Blue or Black vinyl upholstery