They are potholders, so I would guess this is where I must store my pot. Let's see though; I don't have any pot. Therefore I do not require a potholder.
In the home I grew up in they were called hot pads. Any time I have ever made a hot pad, I used the remnants from a mattress pad. The bottom was a piece of denim fabric from an old pair of jeans. The top part could have been remnants from Aunt Bessies dresses (after we removed Aunt Bessie).