I have only had the couches ( I purchased 2 of the same couch) for a few weeks. I put them together on my own. It takes a little patience but was simple enough.. it would obviously be easier with two people. Per usual it comes with an allen key. The couches are beautiful and fairly priced but If you are looking for comfort look elsewhere. They are really firm and may be fine to sit down for short conversation but you won't want to lounge. I bought throw pillows to add back support. I may come back and update after I have had them for a longer period to discuss durability and the off chance that they get more comfortable over time.