Sit -stands provide the versatility of standing while relieving the stresses associated with being on your feet. Built from rugged polyurethane, our sit stands are designed for harsh environments. Polyurethane sit stands are easily cleaned, and feature an optional foot ring available in 18 -inch diameter, black, nylon-reinforced fiberglass or 18-inch diameter chrome. Seat tilt comes standard on every polyurethane sit stand. Each ergonomic sit-stand is back by our 15-year warranty, lifetime on the pneumatic lift.