Military Modular 5 piece Sleeping Bag System. The system is fully functional, all buttons work, however they were issued to soldiers in the field and will show signs of wear and previous use such as; writing on the outside of the stuff sacks or the bag, possible light fading, etc. Includes 2 Sleeping Bags with GORTEX Bivy Cover and 2 stuff sacks small and large. 5 pc Modular Sleep System. Made in the USA! Official USA Military Army Surplus. This package Includes ALL 5 pieces. 2 Compression Stuff Sacks one large one small. Modular Sleeping Patrol Bag. Intermediate Cold Modular Sleeping Bag. When all 3 bags are combined inside each other and fastened together, the modular sleep system is rated to -40 degrees! These modular sleeping bags are mummy-style bags and include the foliage Patrol Bag, either a ACU Gray or Black Intermediate Sleeping Bag, ACU Camo Gore-tex Bivy Cover, and 2 (Gray or Black) Nylon Compression Stuff Sacks large and a small. Each component can be used separately for warmer weather conditions or joined together for colder weather conditions. Bag’s pictured are for representative purposes only.