The Alvin Viceroy chair DC999 is a drafting chair with a pneumatic 23" to33" height control. It has an 18" x 17" x 2" thick polypropylene seat and back shells. The chair has a height and depth adjustable hinged backrest. It also features a built-in steel teardrop footrest. The chair is equipped with dual-wheel casters and has a 24"diameter reinforced nylon base. The seat material is fabric and the seat cushion dimensions are 18" x 17" x 2" thick. The chair is gray in color. Chair was purchased new about eight years ago and has remained in the shipping box unopened.