I bought this shoes for Mongolian winter. When I received this shoes I shocked. Because inside there is no fur or fake fur. So I thought I made wrong choice. But I was mistaken. When I wear this shoes without any extra insole and tick socks no problem in when outside temperature -25C.
One con in here. Amazon's size chart mentioned US woman size 9 is same as European 39. But inside of shoes made in Vietnam and euro size is 42.