I bought these boots for my husband who hasn't been able to find boots to keep his feet warm and dry in the winter months. He loves them! The only complaint he has is that, when he wears them for the entire day, his socks are damp... from sweating, not from leakage.

He usually takes a 10 1/2 US athletic shoe. Reviews said that these run small, and they don't come in 1/2 sizes, so I went with the 11 US, and it fits him perfectly.