It took my son around 45 mins to put this together. Some of the tubular fittings were warped or misshaped so he had to hammer them into shape. It wasn’t too hard since the set is aluminum and soft. It is lightweight and easy to move. You cannot tighten the screws too hard or protective caps will pop off so set is a little jiggly. But my granddaughter at just 3 years is only 25 pounds so no worries there. She loves it and actually took a nap in it.