Sweet precision and simple details go into making Refined Computer Desk Office Chair a pleasantly rewarding office chair. Designed with a delicately ribbed vinyl cushioned high back and waterfall seat, Refined is a task chair that delivers a touch of everything that matters. Equipped with polished aluminum arms, and a hooded nylon base with five dual-wheeled black casters, easily glide over carpeted surfaces in style. Refined Home Office Chair also comes with a height adjustable pneumatic lever and tension knob to control the chair’s backward tilt.