Puffy jackets are warm but earned their name for making the wearer look more like the Michelin man than a well-proportioned human. Belstaff's addressing the issue with its Streamline jacket. It has channel quilting with a 90% down, 10% feather fill for outstanding warmth and a water-repellent nylon exterior to hold up against the elements. Yet it's surprisingly slim, lightweight, and compressible. A flap left chest pocket and side pockets all offer snap-button closures and provide storage and warmth, while an adjustable hood helps to keep the head warm and dry.