It wouldve been so easy to assemble if it was missing the small metal piece to connect the wheels to the axle. I had to use a bobby pin in place of the actual part and contort it/cut it down. The zip bag that was supposed to hold the small metal pieces wasnt even closed so I only had one piece and i had to improvise those bobby pins. It still works really well though, the instruction manual was hard to follow but most of it was pretty easy to discern.