Okay, I babysit young boys a lot and bring this along. They love to play it, it's sturdy and has a great box that doesn't collapse. I usually end up playing with about 24 to 30 pieces for the 4 year olds and IF I get to select I pick the items that aren't construction vehicles, like the cone, boots, stop sign, gloves etc. Too many kinds of excavators, shovels, rollers etc for me! But I guess it helps keep the peace since the kids almost always win!