I love it when you have these styles of sneakers being backless. I have seen backless supis before, but they're so hard to find these days. I do see them on Ebay, but not being a person who uses Ebay, I don't see them anywhere else.
I did not know that Adidas made such in the Superstars but I love them. It is easier now to bury one's face inside the shoe to smell them. Keep posting pictures as your wife ages them.