Can anyone please advise - I have just bought an old garden furniture set and thought I'd dye the covers. On removing the covers, the wadding inside was obviously originally kept nicely together by this odd non material material stuff.... I have attached a photo. It's all disintegrated so wondered where I could buy some more to wrap the wadding in before stuffing back in the newly dyed covers. Can anyone help at all - can't even think of what to google... Thanks!