It was nothing. De nada, as they say.
I don't remember the specifics as I don't really use plastic
wrap all that much. I cared more before I had a foodsaver
because I had problems with freezer burn. I just remember
it was interesting to know because I thought plastic wrap
was all pretty much the same.
Anyway, I did do a quick look and there were all kinds of
science-y words like WVTR (water vapor transmission rate) and
LDPE (low density polyethylene) that maybe you'll find to be
informative.
I did learn how Glad Press and Seal works, but I'm keeping that
information to myself, too.
nancy