Designed to fit your seat. And your back. And your work style. With natural ventilation, the Bungies turn long hours of work into the comfort zone. No napping! Round bungie cords seat and back with black nylon fittings Powder coated steel frame Black polypropylene armrests; black nylon base 50 mm black nylon casters Tilt mechanism with 2 locking positions Adjustable height and swivel BIFMA approved components