Hydrapak PackFlask + 750ml

Hydrapak PackFlask+ 750ml Filter System

A compact, harness-mounted filter water bottle that eliminates the separation between carrying water and filtering water. The PackFlask+ attaches directly to your pack shoulder strap for hands-free drinking through an integrated hollow fiber filter without stopping, removing your pack, or reaching for a separate filter system.

Why We Carry It
It's the filter bottle we recommend for fast-and-light day hikers and trail runners who want to filter on the fly from any water source without breaking stride or adding a separate filter to their kit.

Highlights

• Drink directly through the integrated filter — Fill from any water source and drink immediately through the high-flow self-sealing nozzle without a separate filtration step. The most streamlined water treatment workflow available for active trail use.
• Hollow fiber filter removes 99.999% of bacteria and 99.9999% of parasitic cysts — NSF 42 certified performance against E. coli and common waterborne parasites including Giardia and Cryptosporidium. Reliable protection from a compact integrated system.
• Doubles as a squeeze filter for camp use — The filter cap screws off the flask and functions as a standalone squeeze filter for filling bottles and pots at camp. Two filtration modes in one piece of gear.
• Stretch mesh pouch attaches to pack harness — Clips securely to most pack shoulder straps for hands-free hydration without stopping or reaching back. The pouch also carries a phone, snacks, or a map when the flask isn't in it.
• 750ml collapsible flask at 4.1 ounces — Collapses when empty for easy packing and weighs almost nothing when dry. A practical capacity for active day use with refill capability from natural water sources.
• Leakproof self-sealing nozzle with dust cover — Delivers high-flow hydration without drips and stays clean between uses on dusty trail.
• Beyond Lifetime Guarantee — Hydrapak backs this system with their strongest warranty for confident long-term use.

Best for

Fast-and-light day hikers, trail runners, and backpackers who want a hands-free, on-the-fly filtration system for active trail use where stopping to filter water slows you down. A strong all-in-one solution for anyone who wants filtered hydration accessible on the move without carrying a separate bottle and filter system.

Compatibility Note

Avoid freezing the filter as freezing may permanently damage the hollow fiber membrane. In freezing conditions keep the filter in a pocket or close to your body. Flask capacity 750ml.