This functional, economical drafting chair features pneumatic height control, polypropylene seat and back shells, a depth-adjustable hinged backrest, built-in steel teardrop footrest, dual wheel casters, and a 23 in. diameter reinforced nylon base. Seat cushion is 16 in. x 15 in. x 2 in. thick. Backrest is 15 in. x 10 in. Height adjusts from 23 in. to 29 in.