Ridiculously difficult to assemble! 
My husband and I lost all of our furniture in a moving truck fire and have been assembling various items for a few weeks. These chairs were by far the most difficult pieces we had to assemble. 
-Holes didn't line up for bolts
-Tight space for bolts to go in allow little or no wiggle room with the allen wrench
-Directions are very straightforward but based on the difficulty of assembly, were wondering if key pieces were missing
Once assembled, they were great, but those 3 hours were a nightmare.

Definitely a 2+ person job, and one person should have small hands but massive finger strength!