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High performance SOURCE hydration cargo pack. Features: Generous main compartments with 1 large expandable back compartment featuring pockets and separator to organize small items. Lightweight waistbelt for load stability, mesh structured back for ventilation. The WLPS 3L hydration system is included.

Bags/Packs/Cases > Hydration Packs > Source Assault 20L

Material Spec:

  • Exterior:Tough abrasion resistant Nylon

  • Insulation:5mm closed cell PE

  • Liner:210D/ 420D Nylon

  • Adjusting Straps:Heavy Duty PP

  • Buckles:Super tough Nylon

  • Zippers:YKK

The Assault 20L ships with our WLPS hydration system

  • Liquid Capacity:3L/ 100oz

  • Cargo Capacity:20L/1220.5cu in

  • Weight (pack + reservoir): 1.38kg/3.05lbs

  • Hydration System:WLPS™

  • Reservoir:435 micron co-extruded Glass-Like™ PE

  • Valve:Angled Storm™ Valve

  • Tube:Weave Covered 94cm/37in long

Assault 20L Hydration Cargo Pack

20L Cargo Hydration Pack By SOURCE

Our Assault Hydration Pack offers 20L of cargo space in two easily accessible main compartments, plus an insulated hydration pocket holding the WLPS 3L Hydration System. A flat zippered outside pocket holds a wallet, a phone or any other essentials required available at all times.

Pockets & Straps

The outside main pocket is partitioned in two, it features a zippered inside pocket and additional mesh pockets to store documents, pens, money, phone or a flashlight and to keep any small tools in place. Compression straps on both sides of the pack and straps at the bottom ensure compact pack profile in every situation and allow outside storage of mats or tarps.

Pouches and outside storage space

MOLLE PALS loops (6x5/3x3/3x3), the extra straps and buckles on the sides and at the bottom, and velcro straps on the back offer plenty options to attach extra gear, nametags and pouches as needed.

Separate insulated hydration pocket

The insulated and back-enforced hydration pocket offers a velcro loop on top to attach the reservoir, a drainage hole at the bottom, a nylon elastic separation wall and sufficient space for a second bladder.

Maximum carrying comfort

Carrying comfort is ensured with contoured padded shoulder straps, adjustable waistbelt and flexible sternum strap, and padded and structured mesh back for maximum ventilation.






Hydration Technology WLPS


Taste-Free™ System Glass-Like™ Liner technology in reservoir and tube delivers pure liquid taste with no plastic flavor.


Bacteria-Free™ System Grunge-Guard™ Antimicrobial technology blocks bacterial growth for the life of the system.


Technologie 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.


Care-Free™ System Glass-Like™ Liner with Grunge-Guard™ antimicrobial technologies eliminates the need for cleaning. For days, weeks and even months of use simply refill and drink again and again with no special care required.


Widepac™ Wide Opening Access Patented slide closure for easy filling, draining and cleaning. Airtight Seal! (U.S. Patent No. 7,648,276,B2)


  • Width – 27 cm

  • Length – 46 cm

  • Max depth – 20 cm

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