The Floodlight is a puffy jacket built not just to keep you warm and dry but also to be stashed away until you need it. The Pertex Shield waterproof and breathable shell encapsulates 800-plus-fill goose down, and at 1 pound 5.2 ounces, it's lighter than similar shells and crushes down into an easily packable size. [$375; outdoorresearch.com]