USGI Extreme Cold Weather (ECW) "Mountain" Sleeping Bag

Description

This listing is for the Genuine US Military Issue Extreme Cold Weather Sleeping Bag, often referred to as the "Mountain Bag." This is a heavy-duty, specialized piece of survival gear designed for stationary use in sub-zero environments. Unlike standard lightweight backpacking bags, this unit is built with high-density synthetic insulation to provide a massive thermal barrier against frozen ground and arctic winds. Finished in a classic military olive drab or woodland-era aesthetic, it remains one of the most cost-effective ways to stay warm in true winter conditions.

Technical Specifications

• Type: Extreme Cold Weather (ECW) / Mountain Bag.
• Temperature Rating: Rated for survival in temperatures as low as -20°F (when used with appropriate sleeping pads and clothing).
• Fill: High-loft, thick synthetic polyester fiberfill (retains warmth even when damp).
• Outer Shell: Water-resistant, heavy-duty cotton/nylon poplin or ripstop.
• Shape: Oversized mummy design for maximum heat retention.

Key Features & Design Elements

• Sub-Zero Insulation: This bag is significantly thicker than standard military "Patrol" bags, featuring a dense fill specifically designed to trap body heat in alpine and arctic climates.
• Heavy-Duty Brass/Nylon Zipper: Equipped with a rugged, oversized zipper designed to be operated while wearing gloves, protected by a massive internal draft tube to prevent heat loss.
• Integrated Hood & Drawstrings: The contoured hood can be cinched down to a small opening, protecting the head and neck—the areas of highest heat loss.
• Reinforced Footbox: Shaped to allow for extra insulation around the feet, often the first extremity to feel the cold.
• Durable Construction: Built to withstand the rigors of the field; the outer shell is abrasion-resistant and designed for use on rougher terrain than civilian alternatives.

Condition: Used by our Troops in Great Condition, may show some signs of previous use, may be slightly dirty, may have a minor hole or two, fully functional, Overall Great Condition.