These are great. Amazing quality for the really cheap price. I'm about a 9.5-10 mens and i got the X-Large and they're perfect. I've walked outside on the ice with them and even in some snow and the bottoms are made of some great material. They're really comfortable, although definitely not the most comfortable slippers ever, but you can't beat them for the price. They're also a funky look and whether people think they're cool or weird, they're definitely fun!