These boots are fantastic. I normally wear a size 10, but based on other reviews I bumped that down to 9.5, and I was still swimming in them, so I returned the 9.5s and bought a size 8.5. They are still a bit big, but I prefer that so that I have lots of sock choices. These are certainly not insulated, so being able to put on a thicker sock is great. I had a pair of these before that I literally wore a hole in the sole, and threw them away not realizing I could have had them re-soled. This next pair will get re-soled when the time is right. I also added some waterproofing spray to them and would suggest you do the same as my previous pair got stained from winter salt water in Chicago.