We purchased two Task Chairs for our home office to replace some older chairs. Each arrived at our home in a box disassembled. It took me about an hour to assemble each chair once I figured out an easier way to assemble each chair. It seemed to take forever to secure each bolt using the Allen wrench provided. So I used a 10 mm socket set which helped to speed up the assembly process. Once assembled and installed in front of our computers the chairs were very comfortable for my wife and I.