When I first put these on I thought they were sized too small but I wore them around the house and in about 15 minutes my feet settled in and they fit true to size.  One of the side zippers gave me some trouble but a couple of drops of oil fixed that.  I have yet to wear them in extreme cold but I expect they will be up to the challenge.  They go on and come off easy and are light weight and comfortable.

Since my initial review I have worn these in snow & rain and bitter cold.  As I expected these boots function very well.  They hold a shine too.