JONPONY Big and Tall Office Chair 400LBS Wide Seat Ergonomic Computer Desk Chair High Back Executive Leather Chair Adjustable Task Chair Lumbar Back Support 8 Hours Heavy Duty Design,BlackErgonomic Design: Ergonomic design with lumbar support can give you enough support to avoid hurt from long time sitting. Update Material: The seat and backrest are filled with soft and high density sponges which are very comfortable in using. The wear resistant and soft faux leather of the chair can be used for a long time. Multi functions: The Desk Chair can adjust height to meet different demands of height. Rock function can provide you a relax time