A cross between civilian warmth and military-inspired utility, this Puffer Shirt works whether you're layering under a parka or wearing it solo on brisk autumn mornings. Built with Oeko-Tex certified fabric and a 100% PFC-free water-repellent finish, it combines eco-conscious construction with a relaxed fit that slides comfortably over flannels and tees, making it the kind of transitional piece that earns permanent rotation in your cold-weather arsenal.