I bought size bigger and wayyyy to big. bought the 12 that I normally fit in and they are ok but even wearing the biggest socks they are somewhat loose. My toes fit fine but the whole boot its self is a little loose. I don't think I could actually work a job in them but for really wet, muddy and cold conditions they were as described. They have good soles and seem well made. Just not the best fit around the ankle and leg. The foot pad also comes up sometimes when I pull my feet out.