I just would like the listing to tell me what it’s made of. There’s a silicone ironing sheet included and no mention of vinyl, so you are right. But why not say it’s cotton or polyester or something. I tried checking the Oliver’s page and no help there either.
I just checked to see if maybe there was even a clue, but there isn't, other than the fact that it's for clothing and that a dry, very hot iron is used to adhere the label, which means it won't include heat-sensitive fibers.
It sounds like the tagless labels manufacturers put on clothing and that sometimes show through on the outside. If that's what it is, I hope the labels include instructions that caution against using on thin, white cloth.
