The main fabric of this down jacke is made of polyester, it is supper comfy, the main fabric is three layer construction, with ePTFE membrane, and it's waterproof and breathable, 800 fill power Goose/Duck Down Jacket was heavy, warm, it's perfect for some place very cold, you can put it on when you on play trips in the snow with kids and around town , it's surprisingly suitable for business and casual use. we have been engaged in outdoor clothing and casual wear producing for 27 years, the down jacket came from our product line with no down leakage, we use a grade of down with a higher percentage of down plumes to feathers, this is awesome for keeping you warm. In addition to that, it gives you an option to choose how you want to wear your winter jacket, with premium seam taping, streamlined seams, waterproof, breathable, and a fit that is reasonably trim but roomy enough for layering. And if it gets really cold, zip-up the jacket for ultimate protection from the cold. Overall it is a good choice, especially if you are looking for something top-quality, affordable and stylish for outdoorsmen and women.