These are absolutely warm and comfortable in the coldest/snowiest conditions. When I first slipped them on, indoors, I thought they were too confining, but once I got outside, they were perfect. I take a size 9 and bought the size 9. These boots are perfect for tough winters, and it is easy enough to walk in them.  I only detracted one star because not made in U.S. (or Canada). My first winter with them, so can't comment on the longevity.  Very pleased.