Thongs for your feet

I thought I had seen it all, then I saw underwear for the feet. It sounds and looks quite silly to me. In fact, they are styled such that I'd have to call them thongs for the feet. I really don't see the point of these. I'd rather spend my money on real shoes, not these weird things. Unless you have a serious foot fetish, there's no real use for these foot thongs. But to each his own, maybe you like it more than I do.