Unused Montbell felt sole stream shoes, size 26cm, only tried on indoors. I bought these a few years ago primarily for fishing, but due to the thickness of my neoprene socks, they felt too tight, so I never had the chance to use them and they've been stored away in a closet. The size is only indicated on the insole. For me, who wears a 25.5cm in running shoes, they feel loose with thin socks, comfortably snug with medium-thickness socks, and a bit tight with thick socks or neoprene socks. I'd say they fit similarly to regular sports shoes. *Box is not included.