Facebook Pixel

Kriega Hydrapak Shape-Shift Reservoir 3.75 Litre


The Kriega HydraPak heavy duty, military grade reservoir and insulated drink tube is compatible with Kriega TRAIL 9 and TRAIL 18 Adventure Backpacks.

Select an option below to check stock

 Free Shipping within Vietnam!

 Cash on Delivery!

 7 Days Return Exchange!

7 Days Return Policy

  • Item doesn't fit?
  • Item not what you expected?
  • Item broken?

No worries, send it back to us and we will replace it or refund it. No questions asked.

All we ask is that you don't purposely break it, use it for "free" or abuse the 7 day timeline.




Free Shipping

Free cash on delivery and free shipping. Shipping within Vietnam can take up to 1 week, and we do have the items in stock and ready to go.

Also, international world wide shipping is cheap and reasonable. Just ask us!



Order the item through the site, hit "cash on delivery" on the checkout process. The item will be delivered to your door at which time you can pay.

The same as any food delivery service in Vietnam, super convenient.

Ask Jon for help!

Response within 24 hours!

Facebook | Email

Jons comments

This water bladder is a whopping 3.75 liters which goes into the Trail-9 and Trail-18 backpacks.

3.75 is about the capacity that you need to get through a full day in the tropical heat. It also leaves room for you to throw your bladder in the freezer and still have enough liquid when it all that godly ice melts. Remember that water expands when frozen, so those little one-liter bags are no good for ice mixing.

Kriega also sells parts separately for this bladder, so it is possible to do routine replacements of the mouthpiece. They are not on our website, but we can get them.

The sales stuff
The Kriega HydraPak heavy duty, military grade reservoir and insulated drink tube is compatible with Kriega TRAIL 9 and TRAIL 18 Adventure Backpacks.

The 'First Wave' (military spec.) reservoir is designed for extreme environments. The 0.4mm thick Thermo Polyurethane (TPU) is twice the thickness of the standard consumer model. Fully reversible for easy cleaning / drying. A Wide Slide-Seal™ top makes it easy to fill and creates a leak-proof seal. The Hydrofusion™ tube is durable and lightweight with built-in foam insulation, this simple, but breakthrough tube helps keep your water cooler in even the hottest temperatures.

Surge™ Bite Valve naturally ergonomic design with twist on/off function and protective cover. 

Plug-N-Play™ connect system lets you easily disconnect the drink tube (an auto shutoff valve prevents leaking) and remove the reservoir from your pack for convenient refilling while leaving the drink tube in position.


  • Wide Slide Seal™ for easy fill

  • Reverse to clean / dry

  • Dishwasher safe

  • Includes tube management for harness

  • 3.75-litre (126 fl oz) capacity

  • Reversible for easy clean/dry

  • Wide fill (sliding seal)

  • Plug-N-Play (dry-break)

  • Insulated drink-tube

  • Hook and loop tab - drink tube management

  • FDA approved polyurethane

Please see the Spreadsheet for an overview of model pricing.

Your Rating
We found other products you might like!
Customers Who Bought This Item Also Bought