I ordered a half size large and 4E based on reviews and they are a little big. As another reviewer commented, they do not have a conventional tongue and the opening is quite tight making it a chore to get them one, but once you get your foot in there it’s very comfortable. Even with them being 4E my fat foot kinda spills over the narrow sole. I’m concerned about the long-term durability of the fabric. Time will tell.UPDATE: I’ve worn these for about 6 months and these are by far the most comfortable shoes I think I’ve ever had. My original concerns with these shoes being difficult to get on are gone. The heel kind of mashes down over time and you foot kinda slides in like a slip on loafer. You can use the laces to get the fit you want and then double-Mont them and never tie them again. I like them so much I bought 5 more pairs to have for the future!