Marmot Camp & Hike Col - Men's Solar/black Center-Zip 3702019629CZ. Stuffed with 800-fill-power down and made with waterproof and windproof Pertex Shield Fabric this lightweight sleeping bag keeps you warm and dry when Mother Nature is fickle. A draft tube and collar and a center zip lets your regulate heat while center and dual side zips make it easy to climb in and out.