Product DescriptionThe NZ 20 Mummy Ultralight Sleeping Bag is designed for high-altitude expeditions, backpacking, and camping trips, offering exceptional warmth, comfort, and packability. Built with premium materials and innovative features, it's your go-to sleeping bag for mild to cold weather adventures.Key Features Premium Insulation & Materials: Filled with 850+ fill power white duck down for exceptional warmth-to-weight performance. Constructed with water-resistant 10D taffeta ripstop nylon for durability and protection from the elements. Responsibly sourced and certified to the RDS (Responsible Down Standard).Advanced Warmth & Comfort: Comfort limit of 18AdegF (-8AdegC). Hooded design with adjustable collar and hood pull-strings to trap heat, plus shoulder and zipper baffles to block drafts. Includes an internal pocket for essentials like a phone or headlamp.Lightweight & Packable: Compresses to roughly 12 x 6 inches-about the size of a 32-oz water bottle-using the included compression sack, saving valuable space in your pack without sacrificing warmth.Designed for Adventure: Ideal for high-altitude mountaineering, cold-weather camping, and backpacking. Built to handle demanding use while staying lightweight and easy to pack. Offers higher fill power than many competitors, delivering premium performance at an unbeatable value.Included Accessories Compression carrying bag made of ripstop nylon.Mesh storage sack for long-term storage.Technical Specs Best UseBackpacking/MountaineeringTemperature Rating (F/C)Comfort: 28 F/ -2 CComfort Limit: 18 F/ -8 CExtreme: 12 F/ -11 CWeightShort: 1 lb. 8 oz. (700 g)Regular: 1 lb. 13 oz. (800 g)Long: 2 lbs. (900 g)Zipper LocationRightMaterial10D taffeta nylonInsulation TypeWhite duck downFill850+ fill power (RDS certified)Short: 400 g of down fillRegular: 470 g of down fillLong: 560 g of down fillShapeMummyFit (User Recommended Height)Short: Fits up to 5' 6" (168 cm)Regular: Fits up to 6' (183 cm)Long: Fits up to 6' 6" (198 cm)Dimensions (L x shoulder/hip width)Short: 73 x 31/18 inchesRegular: 80 x 31/20 inchesLong: 87 x 31/20 inchesGenderUnisexShipping Time: Orders processed and shipped within same day, or next business day of placement date. Shipped from Arizona. Delivered in 2-6 days with FREE GROUND SHIPPING on all orders over $99 that ship within the 48 contiguous United States. Additional shipping options available.