I'm sometimes a size 5 and sometimes a 6, my measurement (foot length) is exactly 24cm which was the maximum for a 5, I selected the 5 but was concerned that it would be too snug or short. The boot is perfect, there's still room (length), the fit is snug but not tight. The boots are warm, the natural wool offers the warmth, I find synthetic fur does not give the warmth natural wool does. The zip is strong and of good quality. The oxblood colour is dark deep red, almost black but not black. I am very happy with my purchase and would recommend the boots.