This authentic U.S. Government Issue Integrated Individual Fighting System (IIFS) pack set, manufactured by Specialty Defense Systems, includes both the Large Field Pack with Internal Frame and the Combat Patrol Pack, both in M81 Woodland camouflage. Designed to meet the rigorous demands of military operations, this system offers durability, versatility, and ample storage for various mission profiles.
 
Large Field Pack with Internal Frame:
Engineered for extended operations, the Large Field Pack offers substantial capacity and features a two-compartment design:
Main Compartment: Spacious and adaptable, separated from the lower sleeping bag compartment by a removable internal shelf. This allows for a single large storage area when needed.
Sleeping Bag Compartment: Located at the base, providing dedicated space for sleep systems or other gear, accessible via a front zipper.
 
The pack is supported by a robust internal frame comprising two aluminum staves running the full height, offering structural integrity and load distribution. Padded shoulder straps and an adjustable waist belt enhance comfort during prolonged use. Externally, the pack features 2.25-inch and 1-inch webbing loops for attaching additional equipment. Compression straps ensure load stability, and multiple pockets provide organized storage solutions.
 
Combat Patrol Pack:
Designed for shorter missions or day trips, the Combat Patrol Pack offers approximately 1,200 cubic inches of storage across two compartments:
Main Compartment: Padded to protect contents and includes tie-down straps for securing items like communication equipment.
Front Compartment: Provides additional storage for smaller essentials.
This pack features its own shoulder harness for standalone use and is also equipped with external webbing loops for modular customization.
 
Integration and Modularity:
A key feature of this system is the seamless integration between the two packs. The Combat Patrol Pack can be attached atop the Large Field Pack using dedicated strap assemblies with quick-release buckles, allowing for a consolidated load when both packs are utilized together. This modularity enables users to tailor their loadout based on mission requirements, enhancing operational efficiency.