Elecwish, 2PCS Adjustable Office Executive Chair, High Back Tall Ribbed, Pu Leather, Wheels Arm Rest Computer, Chrome Base, Home Furniture, Conference Room Reception (Dual Black) -for asin :B015VVVU8I is prime.Modern design with double layered PU leather covering for style and comfort -Heavy duty curved Sturdy Chrome Base with 5 rolling wheel casters, Embodies the line beauty as a basic idea. -High back provides support for your whole body, ANSI/BIFMA testedS curve model backrest designed according to ergonomic principle to give your lumar support. -Fully adjustable height with 360-degree swivel rotation -Adjustable seat height and tilt tension control(Tilt up to 20 degrees or upright locking position)