The U.S. Issue Military Modular Sleep System is one bag that can cover all your needs. The system contains a Gore-Tex Woodland Camo waterproof breathable Bivy Cover, olive green light weight Patrol Sleeping Bag, Black Intermediate Weather Sleeping Bag (ICS) and a Military Compression Sack.

Each sleeping bag can be used individually or together to make the perfect sleeping bag combination you need.   The patrol sleeping bag that is rated for temperatures 50 to 30°, the Intermediate Cold Weather sleeping bag is rated for temperatures 30 to -10°, and the Bivy Cover is made of waterproof and windproof 3-layer GORE-TEX® fabric.  When combining the Patrol and ICW bags, the system is rated to climates -20; down to -50° with proper clothing. Mix and match as you need for the perfect temperature every time.

All this will pack into the stuff sack that compresses to one cubic foot with wide nylon webbing straps adjust by ladder lock buckles. The Entire system measures 19.5-23.5” in length and just over 10” in diameter. Made in the U.S.A and tested by soldiers around the world.

Features & Specs 

• Genuine GORE-TEX® waterproof / breathable Bivy Bag
• Extended Cold Weather System military rated
• Nylon filled Mummy-style for extreme warmth
• Taped, no leak seams on Bivy Bag
• Heavy-gauge zippers are built to last
• Includes nylon stuff sack for easy transport / storage
• Patrol Sleeping Bag: rated 30 to 50°F
• Mummy Sleeping Bag: rated +30 to
• Manufactured by Tanner industries or other government contractors
• NSN# 8465-01-398-0687