I have had mine for about eight years and consider it the best money I have spent on hunting gear. I have hunted in temps below -10 degrees with gusting winds with it, without it, I wouldn't last very long. When it gets below zero, I drop a couple of those heater packs down the legs of the suit and the heat keeps it cozy in there. It's perfect for me as I have to walk long distances to get deep into public land, and I can dress fairly lightly so I don't start to sweat. Plus I don't have to wear layer upon layer once I get to my stand site. They are expensive, but so is good quality wool. No matter how many layers I put on, I still tend to get cold, not so with the HBS. Get one, you wont regret it.