@Mather yeah thats probably the same thing, I'm not the best with descriptions. If a record is in an envelope where there it hugs the envelope like spandex, and the envelope is bendy, what is even the point?
In my experience, flimsy record mailers coming from Europe is not unusual. The flimsiest seem to come from UK sellers. I get the impression that they are very weight-conscious on that side of the pond, for postage cost reasons.