I did order 1 size up (usual size 9 - ordered 10) since other reviewers said they run a bit smaller.  I wished I would have gone up to a 10.5.

I did call about exchanging them for 10.5 but was told the price increased since the boots were now available from Shoe Mall and not Amazon.  I decided to wear "thinner" socks.  Other than that,  these boots are very lightweight and I'm sure I will wear them when I walk this winter.  I live in NW Ohio ~~ today our temp is close to 60 so it might be a while until I try them.

Overall, very pleased with the way they look and according to other reviewers - they are very warm.