The sack-ups is the right thing that I am talking about. This site sells basically the same thing. Scroll down until you see them.

https://thesuperiorshave.com/straigh...ses_rolls.html

It looks to me that it would be $12 shipped, but I am not 100% sure.

The sleeve that you found on ebay would not do the same thing. It is the silicon treatment in these sleeves that does the trick.

Best Regards,

Jeremy