What is this "ARA straws" folder??

screenshots
I just bought the straw today (a straw from an old stud named Hat Trick), and didn't sort it into a folder or anything. When I looked at my freezer, I was confused as to why it wasn't in the unsorted straw section. Then I looked further and noticed a folder called "ARA straws" and after opening it I found the straw in there. What's weird is that at the bottom, "ARA straws" is not a folder I can delete or rename or anything. So i have no clue where it came from. I know some other players have that folder too after looking at some freezer sale screenshots, but they don't seem to know what it is either.

No idea, i'll check if i have it. Nice to see some old TB lines still going!

This happened to me a while ago when I bought a straw. For me, the folder disappeared after I moved the straw out of it

If the seller had it in a folder when they sold it, that folder gets copied to your freezer when you buy it. It will disappear if you move the straw out.

Thank you!!