USGI Modular Sleep System (MSS) – 4-Piece Woodland Camo

Description

This listing is for a Genuine USGI (United States Government Issue) Modular Sleep System (MSS) in the classic Woodland Camo pattern. This is the legendary, all-weather sleep system designed to keep soldiers comfortable in environments ranging from mild temperate zones to extreme sub-zero conditions. The system is comprised of four distinct components that can be used independently or layered together to create a customized thermal barrier based on the specific climate.

Technical Specifications

• System Name: Modular Sleep System (MSS)
• Configuration: 4-Piece System
• Temperature Rating: Comfort down to -30°F (when all layers are combined)
• Pattern: Woodland Camo (Bivy) / Black & OD Green (Insulation layers)
• Material: Ripstop Nylon (Bivy) / Synthetic Polyester Fill (Bags)
• Zippers: Heavy-duty YKK® non-locking, two-way zippers
• Origin: USGI / Military Contract (Berry Amendment Compliant)

Components Included

• Patrol Bag (Green): Designed for temperatures down to 35°F. Features a water-resistant ripstop nylon shell and is ideal for warm-to-mild weather.
• Intermediate Cold Weather Bag (Black): Designed for temperatures between 35°F and -5°F. Features increased insulation for late-season or alpine use.
• Woodland Camo Bivy Cover: A waterproof, breathable GORE-TEX® (or equivalent) outer shell. It protects the insulation layers from wind, rain, and snow while allowing moisture vapor to escape.
• Large Compression Stuff Sack (Black): A heavy-duty nylon sack with multiple tensioning straps designed to compress the entire system into a manageable size for rucksack transport.

Key Features & Design Elements

• Modular Layering: The bags snap together via heavy-duty perimeter snaps. By nesting the Intermediate bag inside the Patrol bag and wrapping both in the Bivy, you create a high-loft thermal system for extreme cold.
• Vapor Permeable Bivy: The GORE-TEX® bivy cover allows you to sleep in the open without a tent, providing a waterproof barrier that prevents condensation buildup inside the bags.
• Non-Locking Zippers: Specifically designed so the occupant can "burst" out of the bag in an emergency without fumbling for zipper pulls.
• Anatomical Hood: Each bag features a drawcord-adjustable hood to trap heat around the head and neck, which is essential for preventing heat loss in sub-zero temperatures.
• Reinforced Footbox: Designed with extra room at the bottom to allow for sleeping with boots on or storing water/electronics to keep them from freezing.

Condition: Used by our Troops in Great Condition, all components are fully functional, no holes or tears, may be slightly dirty at worst, may have minor signs of wear, Overall Great Condition.