VIVA OFFICE Mid Back Mesh Computer Chair,Green Ergonomic comfortable mesh office chair, 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 High quality armrest, chrome base, and high quality Nylon casters Mesh upholstered seat to eliminate leg fatigue Easy assembly upon arrival. Note: the color is way more green and brighter than pictured on the website. We also provide component-exchange in two years