Comfortable Sitting Experience：This big and tall office chair has an ergonomic curved back and adjustable lumbar support.it will always give you a comfortable sitting experience. 500 LBS Stable Structure：This executive office chair comes with a heavy-duty metal base and lift cylinder for high safety and strong support. it can hold up to Max 500lbs. Modern and Stylish Design: The sleek and modern design of this computer desk chair complements any home or office decor. Easy to assemble:it comes with easy-to-follow instructions and all the necessary hardware kits, mostly 15 minutes finished. If you have any questions, please feel free to contact us.