I'm pretty sure this was my older sister's when she was younger. I believe it's at least from the 90's, if not 80's.

You can see in the 3rd and 5th image that I have the one strap safety pinned in the back. It came apart there before and I did that, rather than sew it back together.

If you are interested in this item but that puts you off, lemme know and I can sew it for you - if you want - before you buy (I can't be bothered to do it if the item's just gonna remain unsold.. ^^)