Specifications ? Product Size(Backrest):15.6"X17.7" ? Product Size(Seat):16.7"X16.3" ? Load Capacity: ? 250 LBS ? Adjustable height: 35.6" -40.4" ? Color: Black Features ? Soft and thick cushion with mesh ensure breathable whole day ? Simple assembly, only a few steps to complete your office chair ? Mid back mesh chair is specially designed for the long hours of office workers or video game players ? Ergonomically designed backrest protects your neck and back muscles ? Quiet rolling, flexible operation,360-degree swivel and smooth-rolling casters ? Strong back support, for your day of work or games to provide enough comfort, alleviate fatigue Package Including ? Mid back office Chair ? Installation Hardware ? Installation Tool ? Installation Manual We have a perfect after-sales service team, if you have any questions, please feel free to contact us, we are glad to serve you.