It all packs down together and has a mesh carry bag to hold it. The largest pot sits in the fry pan, the other pot and items sit inside the large pot. "Largest" & "large" are relative here. None of the pots were near large enough for the car camping that we do. I would use it for backpacking and it is light, but it will take up a fair sized corner in a pack. If you're distributing items between fellow hikers, this shouldn't be a problem.
Yes, these stack together.