The US military black modular intermediate sleeping bag is designed for use in cold weather conditions. It can be used alone or combined with the patrol bag and bivy cover as part of the Modular Sleep System for extended temperature protection.

• Color: Black
• Temperature range: +10°F to +30°F (varies by conditions)
• Material: Nylon shell with polyester insulation
• Compatibility: Part of the U.S. Modular Sleep System (MSS)

Issued to U.S. military personnel as the cold weather bag in the Modular Sleep System.