This garment represents the third generation of a modular system designed for extreme cold weather protection. It is the outermost layer, categorized as Level 7, and provides insulation against temperatures as low as -40F. Typically featuring a water-resistant nylon shell and filled with advanced synthetic insulation, it is designed for static environments where maximum warmth is essential.
Its importance derives from the need to maintain operational effectiveness in frigid conditions. Originally developed for military personnel operating in arctic environments, this type of garment has become essential for anyone facing extreme cold. The advanced materials and construction provide significant warmth without excessive bulk, allowing for crucial mobility. This specialized clothing has played a vital role in enabling safe and effective operations in extreme cold weather conditions for decades.