Why are there different NSN Options? Over the years, different government contractors have produced these items under different NSN numbers. Rest assured these are all the exact same product, they just have different part numbers. You can select and purchase any option that shows in-stock.
The Improved Modular Sleep System (IMSS) Intermediate Sleeping Bag is the perfect sleeping bag for scouting, camping, or just being prepared. This heavyweight, durable, mummy style sleeping bag is ideal for cold to freezing weather. The Intermediate Sleeping Bag is designed to fit inside of the Bivy Cover, with the Patrol fitting inside of the Intermediate (other parts sold separately). The bags snap together making a system that will keep you warm when the temperature drops below -10°F. The Intermediate Bag alone is heavy weight bag and excellent for use during cold weather.
The durable rip-stop nylon shell and continuous filament polyester insulation is constructed to withstand the rigors of combat. The mummy design helps keep you warm and the generous "boot box" at the bottom is designed to allow the user to keep his or her boots on, either for added warmth or in case a quick exit is needed. Durable YKK zippers are used on either end of the bag allowing wearers to customize the amount of ventilation. Zippers are dual sided and can be easily accessed from the inside.
- Temperatures to -10°
- Free from cold spots
- Insulation does not migrate in the bag
- Anatomically designed foot box contains twice the insulation as the bag
- Sewn-in, quilted chest collar prevents air drafts up and down through the hood
- Hood adjusts for heat retention; includes nylon drawcord and barrel lock
- Dimensions: 80"L x 34"W (Top) 28"W (Foot)
- Weight: Approximately 3.9 lbs
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