The Calypso Jacket truly delivers in comfort and warmthits made with ultra air permeable shell fabric and a perfectly toasted marshmallow-soft Primaloft insulation (which happens to come from post-consumer recycled materials). But this hoodless, streamlined puffy isnt lacking in technical features, either. Its coated with Durable Water Repellent, has calculated stitch lines for movement, and is tricked out with waterproof zippers to keep you protected.