Military Modular 4 piece Sleeping Bag SystemUsed Good ConditionIncludes 2 Sleeping Bags with GORTEX Bivy Cover and stuff sack Year Round 4 pc Modular Sleep SystemMade in the us!Official USA Military Army Surplus This package Includes ALL 4 pieces:Goretex Bivy Cover Compression Stuff Sack Modular Sleeping Patrol Bag Intermediate Cold Modular Sleeping Bag When all 3 bags are combined inside Every other and fastened together, the modular sleep system is rated to -40 degrees! These modular sleeping bags are mummy-style bags and include the Green Patrol Bag, Black Intermediate Sleeping Bag, Woodland Camo Gore-tex Bivy Cover, and Black Nylon Compression Stuff Sack. Every component can be utilized one after the other for warmer weather conditions or joined together for colder weather conditions. The 4 modular sleeping bag components include: Green Patrol Sleeping Bag This bag, when used alone is rated for temps down to 30 degrees F. It’s ripstop nylon with polyester fill and is water resistant. It has a reversible double pull zipper which allows the top or bottom end to ventilate and also includes a draft overlapping flap to prevent heat loss. Includes draw string for hood. Black Intermediate Sleeping Bag This bag (the black fits inside the green) is rated for temps down to -10 degrees F. It has a reversible double pull zipper which allows the top or bottom end to ventilate and also includes a draft overlapping flap to prevent heat loss. It has a foot box at the bottom that contains double the insulation as the remainder of the bag for more warmth. The chest collar prevents air drafts. Like the green patrol, this bag may be ripstop nylon with polyester fill and is water resistant. Includes draw string for hood. By placing the black inside the green, and both inside the goretex bivy cover you’ll weather temperatures down to -30. Woodland Camo Gortex Bivy Cover The bivy cover is made of durable 3-layer GORE-TEX fabric. It has a reversible double pull zipper which allows the top or bottom end to ventilate and also includes a draft overlapping flap to prevent heat loss. It is waterproof and windproof and can give protection to you and your sleeping bags in nasty or cold weather. Includes snap fastener and zipper slide fasteners . Black Compression Stuff Sack For travelling with and transporting your sleep system. Compresses to one cubic foot or so . It provides six 1″ wide nylon webbing straps adjusted by buckles. Includes Nylon drawcord closure with a barrel lock. This is official US MILITARY Guaranteed 100% Authentic. Obtained at Military Surplus Auction in the us. Because they’re made for the military they’re rugged and durable, they’re great for hunters, preppers, hikers, campers, fisherman, boy scouts, outdoorsman, survivalists, or any out of doors activity.