Would be nice if the same product were made of the same material worldwide, though. I'm wondering if there's been a change and perhaps some of the documentation is not error-free

. It's possible that if the mattress pad is in transition from the polyester/memory foam to lambswool/latex that they're going to sell all the current stock before bringing in the new...
But I'm just speculating here.
Welcome to IKEAFANS, though it looks as though you've been lurking for a while! Glad you decided to post!
Susan