A bag and a tinier bag

You know the cloth bags you can get that come with an attached tiny sack that you can stuff them into? ( ChicoBags are one manufacturer--that's what I have.)

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(When you're using it as a bag, you turn it the other way out so the attached pouch doesn't show.)

The other day I was using mine, and the guy who was putting my stuff in my bag for me seemed especially interested in that little attached pouch.

"Clever, isn't it," I said. "It means the bag folds up really small for you to carry it."

"It's also ...