Carhartt coats are work-tested and made of rugged duck and canvas.
The linings are rated warm, warmer and warmest. The arctic quilt lining and the quilted flannel lining are the warmest. The sherpa lining, nylon quilt lining are rated warmer. The thermal lining is rated warm.
So choose your lining and your outerwear fabric that suits your needs. This makes Carhartt the best outerwear choice.