U.S. G.I. Intermediate Sleeping Bag

There is a certain honesty to military sleep gear: it was never designed to impress from a showroom shelf, only to keep a person warm when the ground is hard, the air is sharp, and comfort has to be earned. This U.S. G.I. Intermediate Cold Weather Sleeping Bag is a rugged piece of genuine military field equipment, originally designed as part of the U.S. Modular Sleep System for dependable cold-weather protection. Built in a mummy-style shape to help retain body heat, this bag features a durable nylon shell, synthetic insulation, a full-length zipper, draft protection, and an adjustable hood area that helps seal in warmth when temperatures drop. The Intermediate Bag is the colder-weather component of the system and can be used on its own or layered with other MSS components for a more complete sleep setup. Its tough construction and field-proven design make it ideal for camping, hunting trips, emergency vehicle kits, cabin storage, preparedness gear, or anyone who appreciates dependable surplus without unnecessary frills. Whether rolled into a bug-out setup or kept ready for cold nights outdoors, this sleeping bag brings the quiet confidence of equipment built for real use rather than casual display. Used, good condition. Genuine U.S. Military Surplus. Made in the USA.

Expert Tips: Air the bag out fully before long-term storage, and store it loosely when possible rather than tightly compressed to help preserve insulation loft. Use with a sleeping pad, cot, or ground mat for better warmth, since much heat is lost through direct contact with the ground. For wet or windy conditions, pair it with a bivy cover or waterproof outer layer, as the sleeping bag itself is warm but not intended to replace full weather protection. Spot clean when needed and allow it to dry completely before packing away.

Reference Note: U.S. Army sleep-system information lists the intermediate bag as the cold-weather component, with protection roughly in the minus 5°F to 35°F range, while manufacturer listings commonly describe it as part of the Modular Sleep System and approximately 85–87 inches long by 34.5–35.5 inches wide.