Es löst meine 2 Hauptpains: 1. This is a strap with a sticky rubber surface on one side and velcro fastener. I can tell you it was a zip tied after that though. I had purchased some flat sandals from Crocs before, but DANG are these so cute and SO comfortable. If I wasnt so determined to get them on I would of stopped on my third try. I think everyone must have one of these or a couple :D I have an issue with house shoes, with most slippers if I wear them without socks my feet sweat, only socks, my feet get to dry. And the gold ring is hard to open. I have ?mommy fat ? which I hate ! I have large, wide feet and these fit pretty well