which is not big deal, but then it condenses on other things. Turns out that they make it out of cotton or polyester but the cotton stuff lasts longer. A little white glue and you are in b'ness. If you have Mylar close at hand -or find it easy to get -it is about the same stuff, but not quite as good. Be careful though with things prone to tarnish or discolor -the foam is synthetic and liable to out-gas all manner of nasty chemicals and gases. But what I can tell you is that if your collection is sufficiently valuable and you are not confident about your storage, you owe it to your self to look into installing a membrane seal. It's a complicated issue and I don't have a lot of advice as to what collectable needs to be protected from what material.

by Bill Harvey. The knit stuff is easier to use -it seems to me to be more liquid or willing to drape- and is often cheaper then the woven fabric. This is a good company with an excellent web site for advice and products for protecting books and papers, -an altogether worthy thing to do.
https://shareba.com/read-blog/52001ibaf3n4j409317gmgug448716
http://www.gta-five-forum.com/blog-e65257-Don-t-leave-the-booth-designing-for-the-last-minute.html
http://facekobo.com/event/142270