Very easy to assemble, but very tiny!
Arrived the morning after I ordered them. 
Couldn't be easier to assemble -- the instructions were merely to screw on the legs by hand. 
However, I ordered these chairs for the office and they are TINY - hardly bigger than myself being a petite woman. I will have to be returning them because they will not fit anyone else at the office! And will be dwarfed by all the other furniture. Tissue box on the chair seat for perspective.