Sleeping bag is built for comfortable camping and travel Compact bag design is great for backpacking Mummy bag offers Invista Thermolite Quallo insulation Weighs 3.5 pounds Double layer construction Shell is 100-percent Tactel nylon Lining is 100-percent nylon taffeta Temperature rated to -5 Fahrenheit Sewn in draft tube and chest collar Hood with drawstring Two bags can be zipped together Two-way number five zipper Includes 210D Oxford nylon compression sack