Minimize liquid and bacterial infiltration. Maximize ergonomics with a larger backrest. Features Saddle-shaped, contoured seat with waterfall front: 18½" wide x 17" deep x 3" thick 18" wide x 19" high backrest with lumbar support 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