Sweet precision and simple details go into making Refined a pleasantly rewarding office chair. Designed with a delicately ribbed vinyl cushioned mid back and waterfall seat, Refined delivers a touch of everything that matters. Equipped with chrome steel armrests, and a polished aluminum base with five dual-wheel black nylon casters, easily glide over carpeted surfaces in style. Refined also comes with a height adjustable pneumatic lever and tension knob to control the chair’s backward tilt.