Deluxe Ergonomic AirGrid Back Black Drafting Chair with Mesh Seat This contemporary mesh drafting chair features an Air Grid screen mesh backrest for maximum airflow and support. Thick Padded Mesh Seat and AirGrid Back with Built-in Lumbar Support One-Touch Pneumatic Seat Height Adjustment Adjustable Metal Foot Ring Nylon Base with Dual Wheel Carpet Casters Features: Finish: Black Material: Seat 70% Polyester 30% Cotton Back70% Nylon 30% Polyester Thick Padded Mesh Seat and AirGrid Back with Built-in Lumbar Support One Touch Pneumatic Seat Height Adjustment Commercial or Residential Use Specifications: Chair Dimensions: 20 W x 26 D x 45 H Chair Weight: 36 lbs Chair Weight Capacity: 275 lbs Seat Dimensions: 19.5 W x 20 D x 4 T Seat Height: 19.75 - 27.75 Back Dimensions: 20 W x 19 H