My husband is the guy who's "super tool savvy" but this wagon's assembly was a nightmare. It's obviously cheaply and poorly manufactured. The holes were cut too narrow; he had to borrow a file from his father and sat their whittling the holes because he was already halfway through assembling the darn thing. My son loves it, but PLEASE skip this thing, if assembly is not your thing. You will most likely end up with a sad toddler and a frustrated spouse. It's done (finally), and the little guy is enjoying the rides to preschool, but every time I look at this thing, it annoys me.