HydraPak has released the PackFlask collection, led by the PackFlask+ 750 ml soft flask with an integrated hollow-fiber water filter. The system holds the flask in a stretch-mesh pouch attached directly to a backpack shoulder harness.
A filter at the front of the pack
The pouch secures with daisy-chain and hook-and-loop attachments. Water is delivered through a self-sealing nozzle protected by a dust cover, while the collapsible TPU flask uses RF-welded seams.
The filter can also operate as a squeeze filter for filling a bottle or pot. HydraPak includes a backflush adapter and warns that freezing can damage the hollow-fiber membrane.
Product details
- Capacity
- 750 ml / 25 fl oz
- Weight
- 116 g / 4.1 oz
- Dimensions
- 228 x 107 mm / 9.0 x 4.2 in
- Filter rating
- Approximately 1,500 L at more than 1 L/min, according to HydraPak
- Materials
- TPU, PP, silicone, POM, TPE, ABS, hollow fiber, polyester, EVA, nylon
- Color
- Clear
Price and filtration claims
HydraPak announced the range on May 15, 2026. Its US page listed the PackFlask+ 750 ml at US$72 and the unfiltered 500 ml version at US$42 on September 5.
HydraPak publishes bacteria and parasite removal figures under HSF 42. Outdoor Forth has not independently tested filtration performance, flow rate, leakage or stability while moving.
Sources & checks
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