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Assault 20L | Tactical backpack | 3L Hydration bladder

The Assault 20L Hydration tactical backpack is high-performance SOURCE hydration cargo pack with included WLPS 3L low profile hydration system. High quality materials ensure protection of the gear stored and durability against tear, abrasion and rough usage. MOLLE webbing allows the soldier to attach additional pouches in order to have on-the-go access to accessories and gear.




  • Care-Free™

    SOURCE’s technologies combined represent the next generation in hydration systems, in which cleaning is no longer an issue. Our systems require the lowest maintenance on the market. More about our Source Hydration Technology

  • Glass-Like™

    A multi-layer Polyethylene film utilizing SOURCE’s Glass-Like™ technology, which prevents bio-film build up making the system self-cleaning. SOURCE’s Glass-Like™ Film is 2000% smoother than standard TPU films, with virtually no difference from glass itself. More about our Source Hydration Technology

  • Grunge Guard™

    An FDA approved and EPA registered antibacterial permanently embedded into the reservoir and tube to block bacteria growth. Effective for the life of the system. This protection has no effect on the water and is non-leaching. More about our Source Hydration Technology

  • Taste-Free™

    Our co-extruded PE film retains the pure taste with absolutely no plastic flavor, also over time. (BPA and Phthalate free.)



  • 18L main compartment
  • Generous partitioned back pocket with zippered inside pocket
  • Insulated separate hydration compartment with tube routing through the left or right shoulder


  • Includes 3L WLPS™ Low Profile hydration bladder with tough 3 layer construction with Glass-like™; Taste-Free™ Grunge-Guard™ antimicrobial; leak-proof wideslide opening; external fill port; self-sealing SQC™ connecting the bladder to the tube and QMT™ at tube tip- Quick connect hose fitting offers push-button convenience, QMT™ has a built-in shut off mechanism which allows UTA™ or valves to be disconnected without spilling.
  • Contoured padded shoulder straps for high comfort
  • Padded contoured back panels for comfort and  support
  • 3D mesh on back and shoulder straps for enhanced ventilation and heat transfer
  • Independent Suspension System with PP reinforced back panel keeps pack stable on the move
  • Adjustable hip belt for additional stability and weight distribution
  • Side and bottom compression straps keep gear compact, stable and close to the center of gravity
  • Zipper Pulls on all zippers for easy handling in the dark or when using gloves
  • D-Loops on the shoulder straps for the attachment of items
  • 3 rows of MOLLE webbing on the back and sides of the backpack

Additional information

Weight 1.38 kg
Dimensions 46 × 20 × 27 cm
Cargo Load Capacity

20 Liter

Reservoir Capacity

3 Liter

Drinking Tube Length

94 cm / 37 in

Drinking Valve

Storm Push-Pull Valve


Black, Coyote, Multicam, Olive


Exterior Fabric

Cordura 500, Cordura 1000

Liner Fabric

Nylon 210, Nylon 420


EVA foam, PE Foam

Adjusting Straps

Heavy Duty PP





Hip Belt Included