The military-grade Kriega HydraPak reservoir and insulated drink tube are compatible with Kriega TRAIL 9 and TRAIL 18 adventure backpacks.

The "First Wave" tank (military specification) is designed for extreme environments. The 0.4 mm thick Thermo Polyurethane (TPU) is twice as thick as the standard consumer model. Fully reversible for easy cleaning/drying. A high Wide Slide-Seal™ facilitates filling and creates a tight seal. The Hydrofusion ™ tube is durable and lightweight with built-in foam insulation, this simple but revolutionary tube helps keep your water cooler even in the hottest temperatures.

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

The Plug-N-Play™ connection system lets you easily disconnect the beverage tube (an automatic shut-off valve prevents leaks) and remove the reservoir from your bag for convenient refilling while leaving the beverage tube in place.