I took some time to research large double wagons like this one after my smaller one finally bit the dust after years of use! I wanted a good wagon, upgraded from my last one, and needed a double. I found this one and was a bit hesitant since it was sold by Walmart (no offense), but once I received it I saw the quality that was mentioned online. The wheels are metal on the inside, so very sturdy, with rubber outside, making it smooth and ready for any terrain. The material is thick, and the metal frame sturdy as well. I love the fold down end underneath for lawn chairs and a canopy to slide in smoothly. I got a great price on this, so not sure how long that is going on, but definitely worth the price!