Ultimate Resilience: The Military Surplus MSS Modular Sleep System Stay warm, dry, and mission-ready with the US Military Surplus Modular Sleep System (MSS) — the ultimate in military sleeping innovation. Manufactured by Tennier Industries, this cold weather sleep system offers unmatched versatility, durability, and performance for current and former military operators, outdoor adventurers, hunters, and preppers alike. MSS Sleep System Components: Military-Grade Comfort The Modular Sleep System includes two interlocking sleeping bags and a rugged, waterproof bivy cover. Each element is designed for flexible use depending on mission needs and weather severity: Patrol Sleeping BagRated for temperatures down to 30°F.NSNs: 8465-01-547-2706, 8465-01-547-2757 Intermediate Cold Weather Sleeping BagHandles temperatures from -10°F to 30°F.NSNs: 8465-01-547-2694, 8465-01-547-2757, 8465-01-445-6274, 8465-01-398-0687 Bivy CoverWaterproof, breathable protection against rain, snow, and wind.NSNs: 8465-01-547-2644, 8465-01-416-8517 When combined, the MSS provides effective insulation and protection in environments as cold as -40°F for up to 4 hours. Compact and lightweight, the system packs down easily into a stuff sack, making it ideal for tactical mobility and expeditions in diverse environments. Weather-Resistant Bivy Cover for Maximum Protection Crafted from waterproof, breathable materials, the included military-grade bivy cover shields you against rain, snow, and wind without trapping moisture inside. Whether you’re facing damp jungle conditions, desert nights, or high-altitude snowfields, the MSS keeps you operational and ready to move. Product Feature List: Made in the USA by Tennier Industries. Complete military sleep system: Includes Patrol Bag, Intermediate Cold Weather Bag, and Weather-Resistant Bivy Cover. Cold weather performance: Suitable from -50°F to 50°F temperature range. Waterproof and windproof bivy cover for all-weather protection. Lightweight and portable: Includes compression stuff sack for easy carry. Highly adaptable for all environments: jungle, desert, alpine, and field conditions. MSS SLEEP SYTEM FAQ CONDITION GUIDE MSS SLEEP SYTEM FAQ What Comes in the US Military Modular Sleep System (MSS)? The complete USGI Modular Sleep System (MSS) includes four components: Patrol Sleeping Bag (mild weather use) Intermediate Cold Weather Sleeping Bag Waterproof and windproof Gore-Tex® bivy cover 9-strap compression stuff sack The 9-strap compression sack allows the entire system to be compacted for transport and secured to a rucksack or vehicle kit. Each component may also be used independently depending on climate and operational needs. How Cold Is the Military Modular Sleep System Rated? When the Patrol Bag and Intermediate Bag are layered together inside the bivy cover, the MSS is rated down to approximately –40°F (for limited exposure under proper conditions). Its modular design allows insulation to scale with the environment — from mild summer conditions to extreme cold weather operations. Is the MSS Bivy Cover Waterproof? Yes. The issued bivy cover is waterproof, windproof, and breathable. It protects against rain, snow, and wind while allowing internal moisture vapor to escape, helping reduce condensation buildup during extended field use. How Much Does the Complete MSS Sleep System Weigh? The complete Modular Sleep System weighs approximately 10 pounds when packed with all components. The included 9-strap compression sack reduces bulk and keeps the system secure during transport, making it practical for rucksacks, vehicles, and deployment gear loads. Is the Military Modular Sleep System Good for Camping? Yes. Originally issued for military deployment, the MSS is widely used by: Campers Hunters Preppers Survival instructors Tactical operators Its layered construction provides adaptable, field-tested durability that often exceeds many commercial cold-weather sleep systems in the same price range. CONDITION GUIDE Condition Guide – USGI Modular Sleep System (MSS)All MSS sleep systems are inspected under our 4-Point Grading System before listing. Because this is genuine military-issued gear, normal signs of field use may be present depending on grade.Premium ConditionNear-new appearanceStrong loft and insulation retentionFully functional zippers and hardwareMinimal to no staining or fadingIdeal for CIF replacement or long-term useThis grade is best for customers who want the cleanest possible surplus system.Very Good ConditionLight cosmetic wear from normal field useInsulation remains effective with strong loftAll components intact and fully functionalMinor markings or inconspicuous repairs A strong balance between condition and value.Good ConditionVisible signs of field usePossible minor fabric wear, fading, or holes small repairsFully functional zippers and componentsInsulation remains serviceableBest suited for camping, survival training, or budget-conscious buyers.Fair ConditionHeavier wearPossible staining, fading, rips and tears, Shows significant useRepairs neededBest for those who are handy and can make repairs. Important NotesBecause this is authentic USGI military surplus:Color shades may vary slightly due to contract batches.Name tapes or unit markings may occasionally be present.All systems are inspected to ensure functional performance before shipment.If you need a specific condition for CIF replacement, contact us before ordering and we’ll help you select the right grade.
