Easy to put together. All parts were clearly labeled. They also include enough screws to put a screw in every hole for the different height levels. I chose not to put them in because I didn't want to risk baby getting them, but they would probsbly be strong. You can skip of course if you don't care about the asthetics. Took less than 30 minutes to put everything together. 4.5/5 on build quality; everything was wrapped and packed really well.