Engineered for your fast and light adventures, the Parsec delivers lightweight and packable warmth. Just like an alpinist precisely selects his rack or a skier carefully chooses her line, Therm-a-Rest took the time to dial in the small details that create comfort and security in the mountains. After you break camp, the mummy-style bag uses a compression sack to easily fit into your pack without weighing you down. Designed with high-quality materials and Therm-a-Rest performance features like SynergyLink™ Connectors, the Parsec easily handles three-season bivys and long pushes into the backcountry. Bottom line, those that need their sleeping bag to go further choose the Parsec. . 800-fill Nikwax Hydrophobic Down™: Dries three times faster than untreated down without using dangerous PFCs. SynergyLink™ Connectors: Integrate the bag with a mattress for optimal comfort and efficiency; removable for versatility. Thermacapture™ Lining: Top of bag is lined to trap radiant body heat and retain warmth without adding bulk or weight. Zoned Insulation: Maximizes warmth and saves weight by intentionally placing fill where you need it most. The Parsec places 60% of the fill on top and 40% on the bottom to give the bag an elite warmth-to-weight ratio. Toe-asis™ Foot Warmer Pocket: Ergonomic toe box that rapidly warms cold feet in a pocket of warm down. Quilt and Blanket Loops: Customize your sleep system by layering Therm-a-Rest’s quilts or tech blankets for increased warmth. Responsible Down Standard Certified: Certification that ensures that the waterfowl in the down supply chain are treated humanely. Additional features: Heat-trapping draft collars, full-length zipper draft tubes, differential cut, snag-free zipper, cinchable hood, and external zip pocket. Fits: 72″. Weight: 1 lbs, 15 oz. Girth, Shoulder: 62″. Girth, Hip: 57″. Girth, Foot box: 46″. Packed dimension: 10 x 15″. EN Comfort (F): 30 F. EN Limit: 20 F. EN Extreme: -11 F. Fill: 800 Fill Goose Nikwax Hydrophobic Down RDS w/ ThermaCapture Lining. Fill weight: 1 lbs, 2 oz. Shell fabric: 20D Polyester Ripstop w/DWR; Lining: 20D Polyester Taffeta. Zipper side: Left. Spot clean. Imported.