If you are looking for serious warmth, but don't want to go with goose down you need to check out the Men's Das Parka from Patagonia. Patagonia's warmest synthetic jacket, this coat has 170 gram Primaloft insulation through the body and 113 gram Primaloft in the hood and sleeves. The exterior of the jacket is built with windproof, water-resistant recycled polyester that is as functional as it is environmentally friendly. The Men's Das Parka will be appropriate for any cold weather situation and due to the fact it is insulated with Primaloft it will manage moisture well and provide warmth even if it gets wet.