The shoes are a bit loose, I normally wear 9-1/2 USA men's shoes. I'm was concerned when I first tried them on, but I kind of like the larger fit. My feet don't seem to mind either, but I do wear socks with them (these are replacing my old CROC sandals, which are over 8 years old!).
I'm not sure about wearing in garden or outside, as the holes may let little critters in. But I use them for house shoes, inside. The shoes grip my floors and are very comfortable to wear. I may order the smaller size, and see if they are a better fit.