VIVA OFFICE High Back Fabric Office Chair with Movable Headrest and Adjustable Armrest Ergonomic high back fabric office chair, designed to provide the perfect lumbar support and extra comfortable sitting experience Movable headrest support can be used as headrest and back cushion, providing extra relaxation. Pneumatic seat height adjustment,and adjustable armrests. High quality PP armrest, Nylon base and Nylon casters. Weight capacity is 250 pounds. Easy assembly upon arrival. We provide free component-exchange in two years.