VIVA OFFICE High Back Mesh Office Chair with Adjustable Headrest, Lumber Pad and Arms Contemporary mesh high back office task chair, designed to provide exceptional back support and to prevent body heat and moisture build up Simple pneumatic control Mechanism allows back angle and seat hight adjustment, pulling out on the control handle, which allows your chair to tilt back, or sit forward and push the control handle in to prevent it from tilting Pneumatic seat height adjustment, adjustable headrest, lumbar pad and armrests Mesh seat and premium fabric upholstery to eliminate leg fatigue High quality Chrome base and Nylon casters. Easy assembly upon arrival. We provide free component-exchange in two years