These are my warmest long johns (and I live in Minnesota, so I have multiple pairs). I wear them a lot. But I have to tell you, they are short -- like Capris -- and they run small. They don't come up to my waist and they're very snug, so I have a little muffin top when I wear them. I'm a medium-sized female (5'6", size 10) and I'd have exchanged them but I bought the largest size. And yet they're the ones I wear most often because they are so dang warm.