The boxes are poorly marked and the instructions are explicitly for the twin-over-twin until you open the full bed extension package with nothing mentioned anywhere else. It’s not a bad bed, just wobblier than I’d like for the price, plus since the wood isn’t as finished as you might expect, there are several splinter hazards. The steps to the top bunk are very big for little legs, adding another drawer and shortening the step height would have been much better. Looks good finished, but I’m not sure how long it will last and if I had it to do over I’m not sure I’d buy this one again.