Easy assembly - comes in two pieces - the base, and the back - which slides onto posts sticking up from the base.  No tools or nuts and bolts needed.  Tilt the base onto its front, so you can see the posts as you start the back into place - then tilt it back and push down on the back until it clicks and you’re done.  Sits high and firm at least at first - easy to recline to two positions - I’m very pleased!