Easy for 2 people to assemble. All the hardware you will need including the Allen wrench, Phillips Head screwdriver, wrench, etc. We did use our own channel lock to hold the nut into place as we tightened the bolt. My husband and I are pleased with the chairs and they look nice in our backyard.  They seem sturdy, durable, and the blue color was beautiful. We also liked that the chairs can be folded down simply by removing a “safety bolt” that is attached to the chair on the side. Very functional.