I've never used them, but at that price how could you go wrong buying one to try, really?

I use actual flat plastic plates for camping...they don't fold, but I don't backpack overnight, so I don't need that. As far as plastic, I wish I had aluminum or some cool metal ones my friend has from Turkey. Sometimes we use the plastic plates to cut up stuff and it's inadequate, and you can't get them near the fire or the camp stove.

You wouldn't catch me using those cups with a hot beverage, though. And they seem flimsy enough that you couldn't set them down on anything not perfectly flat.

Karen