After searching everywhere for a dog show wagon I finally found the perfect one: Doug’s Wagon Walkers. He sells those wagons at most AKC dog shows in SoCal, but you can also buy from his website.
I bought a big one with a crate as it is easier for me with my 2 pekes, I just put them in the crate and that’s it. I use to carry their travel crates but it was too much. Everything folds down like so:
It fits in the trunk of my car and it opens easily. Most people at AKC dog shows have one, however they don’t have a crate like mine; they directly put their travel crates on it and stack them. I like this crate better as it lets my dogs move around in it, and I can always keep an eye on them.