It came in a giant box but was already assembled and all I had to do was attach the arm rests and legs. 

The bolts and nuts of the arms were a bit tricky to tighten because of the small space that's available to tighten them. But other than that great futon. 
Actually it's more like a couch. It's a bit hard right now but I know that once broken in it'll be so comfy. 
It's sitting in my home office and I love it