Haley Strategic - FlatPack Plus Expandable Assault Backpack

The Haley Strategic FlatPack Plus is a mission-adaptable, expandable backpack engineered to bridge the gap between a low-profile assaulter pack and a full-capacity day pack. Designed for direct integration with plate carriers and chest rigs, the FlatPack Plus delivers unmatched modularity, durability, and scalability for professional end users and prepared civilians alike.

The signature zippered expansion system allows the pack to remain nearly flat when compressed, then expand up to 150% additional storage capacity when needed—making it ideal for dynamic loadouts, sustainment gear, or extended operations.

Made in the USA from USA-sourced materials, the FlatPack Plus is Berry Compliant and built using MIL-SPEC fabrics, hardware, and construction techniques for hard use in demanding environments.

• Expandable Main Compartment – Full peel-open design for rapid access and visual identification of gear
• VELCRO® Loop Interior Panels – Supports FlatPack Organization Accessories (sold separately)
• Hydration / Armor Compartment – Accepts 1-liter hydration bladders or FlatPack Plus Level IIIA armor inserts (sold separately)
• Multiple Storage Zones – Secondary full-depth compartment and lower admin pocket for small essentials
• MOLLE/PALS Rear Panel – Direct attachment to plate carriers, sustainment packs, or piggyback systems
• Chest Rig Integration – Designed to integrate with all Haley Strategic chest rigs and placards
• Comfort & Stability – Includes chest strap, comms/hydration routing loops, and drainage grommets

The FlatPack Plus ships with removable shoulder straps and side straps, allowing it to be worn as a standalone backpack or mounted directly to compatible Haley Strategic chest rigs and plate carriers. Optional back pads and shoulder pads can be added for enhanced comfort under heavier loads.

Although purpose-built for Special Operations and professional users, the FlatPack Plus also excels as an everyday carry or preparedness pack, capable of carrying laptops or tablets up to 14 inches.

Included:

• (1) FlatPack Plus
• (2) FlatPack Shoulder Straps
• (2) FlatPack Side Straps

Specifications:

• Total Storage Volume (Expanded): 18.3 Liters
• Main Compartment (Compressed): 14” x 10” x 2”
• Main Compartment (Expanded): 14” x 10” x 6”
• Hydration/Armor Compartment: 14” x 10” x 0.5”
• Second Compartment: 14” x 10” x 1”
• Admin Compartment (Expanded): 7” x 10” x 2”
• Weight: 24.1 oz

Construction:

• MIL-SPEC 500D / 1000D Nylon Laminate
• MIL-SPEC Nylon Webbing and Elastic
• VELCRO® Brand Loop
• YKK Zippers with Elastomer Pull Tabs
• Anti-Slip 1” Buckles

Available Colors: Black, Coyote Brown, Ranger Green, MultiCam, MultiCam Black

Care Instructions: Hand wash with warm water and a soft brush. Air dry indoors away from direct sunlight. Do not machine wash, dry, or dry clean.

California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Choosing Between the FlatPack and FlatPack Plus: The Haley Strategic FlatPack and FlatPack Plus share the same low-profile, plate carrier–integrated design, but differ primarily in capacity and scalability. The standard FlatPack is optimized for minimalist, mission-essential carry and short-duration use, maintaining an ultra-slim profile ideal for lightweight chest rig or plate carrier setups. The FlatPack Plus builds on this foundation with a larger base capacity and an expandable main compartment (up to approximately 18.3 liters), making it better suited for heavier or evolving loadouts, hydration or armor inserts, and extended use. While both packs integrate seamlessly with Haley Strategic chest rigs and placards, the FlatPack Plus offers greater versatility for sustainment gear, preparedness kits, and civilian everyday use—including the ability to carry laptops or tablets up to 14 inches.

• FlatPack: Minimalist, ultra-low profile, best for short missions and light carry
• FlatPack Plus: Larger, expandable, better for extended missions, heavier loads, and everyday use