It's a dirty rotten shame, but someone blew it when they didn't build in enough elastic to allow one to comfortably put these on. Really, it's so stupid, but it hurt to put these on. There's not enough elastic. Once I had them on I loved them. They have great soles; they're light weight; they'd be perfect for indoors and out; they're exactly what I wanted, but they're a pain in the butt and on the foot to get into them. They're going back. Sorry Keen!