The US Marine Corps MARPAT Wet Weather Poncho Liner is a water-resistant insulated blanket designed for field use in wet and cold conditions. It provides warmth and protection while maintaining a lightweight, packable form.

• Pattern: Woodland MARPAT (Marine Pattern)
• Material: Water-resistant nylon shell with polyester insulation
• Function: Insulated poncho liner for wet and cold environments
• Compatibility or Design: Tie cords for attachment to poncho and quick-drying construction

Issued to U.S. Marine Corps personnel as part of the cold and wet weather field gear system.