Very warm, and really kept the dust out of my face, while in the desert. Everyone was jealous of it. Sometimes is a bit tight around the neck, but compared to the rest of the Carhartt products I own, it's definitely one of the best.
The only problem I had with this was the tag. When I first tried it on there was a large tag that was very rough and stiff on the inside that did not feel great on my neck. After some careful removing to not damage the stitching of the item it is much more comfortable. I have used a few different versions of these or similar items for skiing but those are usually a more lightweight material. For long hours working outside in the cold this one is a much thicker fleece instead of a polyester material so it seems like it will be warmer (although also more bulky) and will hold up well but I have not had it long enough or used it enough to really rate on durability or quality but it seems like something I will have for a while.