The Therm-a-Rest Saros 20-Degree Synthetic Mummy Sleeping Bag perfect for warm weather, three-season camping and backpacking. Filled with highly compressible, lightweight synthetic eraLoft insulation, an outstanding down alternative that utilizes hollow fibers, it provides warmth even when wet. The microfiber poly insulation is enclosed in 20D ripstop polyester with a durable water repellent finish, for cold and wet weather applications. Mummy construction features a cinchable hood, insulated toe pocket, and a zipper draft tube and draft collar keep out the cold. Reflective ThermaCapture seams trap body heat, while zoned insulation keeps loft on the top side of the bag to capture rising warm air. SynergyLink Connectors and loops integrate the sleeping bag with a sleeping pad, and additional blankets or quilts, to eliminate cold spots, and prevent shifting during sleep. The Therm-a-Rest Saros 20-Degree Synthetic Mummy Bag is available in three sizes, left zip only. Small sleeping bag fits heights up to five feet six inches, weighs 3 pounds 4 ounces and packs down to 10x17 inches. Regular sleeping bag fits heights up to six feet, weighs 3 pounds 8 ounces and packs down to 8x18 inches. Long sleeping bag fits heights up to six feet six inches, weighs 3 pounds 12 ounces, and packs down to 13x18 inches. Compression stuff sack and storage sack included. Limited lifetime warranty.