Alvin Premo Ergonomic Chair office black

Incorporating quality ergonomic features in a rugged contemporary design, the Premo is the ultimate in seating comfort at a reasonable price. The chair's backrest provides solid orthopedic spine support, and its full-size upholstered seat is contoured for added comfort. Features include pneumatic height control, polypropylene seat and back shells, a height- and depth-adjustable backrest with heavy-duty spring tension angle control, dual wheel casters, and a 25 in. diameter reinforced nylon base. Seat cushion is 19 in. x 17 in. x 3 in. thick. Backrest is 16 in. x 14 in. x 2 1/2 in. thick. Office model height adjusts from 16 1/2 in. to 21 1/2 in. Drafting model includes height extension kit and adjusts from 24 in. to 29 in.