VIVA OFFICE High Back Mesh Chair, Green Contemporary ergonomic mesh office chairs, designed to provide exceptional back support and to prevent body heat and moisture build up Simple pneumatic controls let you raise or lower your seat and rock back in your chair.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 Fashionable design, high quality Nylon base and Nylon casters Mesh seat and premium fabric upholstery to eliminates leg fatigue Weight capacity is 250 pounds. Easy assembly upon arrival. We provide free component-exchange in 12 months.