How to Use the PackFlask+ 750ml for Long Runs

Quick answer

Use the PackFlask+ 750ml on long runs by filling from natural water sources, drinking through the integrated filter, and storing the stretch-mesh pouch for easy access. The built-in filter lets you refill anywhere, so you carry less water and stay hydrated longer.

How to use the PackFlask+ 750ml on a long run

1. Step 1: Prepare the flask before your run: Remove the filter cap and fill the flask with clean water from home. Screw the filter cap back on tightly. If you plan to use the filter on the trail, wet the filter membrane by sucking a few times before you head out. Check that the seal is snug to avoid leaks in your pack.
2. Step 2: Carry the flask for easy access: Slide the flask into the stretch-mesh pouch and hold it in your hand or tuck it into a running vest pocket. The pouch keeps the flask secure and lets you grab it quickly. If you prefer hands-free, attach the flask to a pack strap using the included loop. The flask works best when you can reach it without stopping your stride.
3. Step 3: Drink while running: Bite the self-sealing nozzle and squeeze the flask gently to release water. The high-flow nozzle delivers a steady stream without needing to suck hard. Release the bite valve to seal the flask and prevent drips. Common mistake: squeezing too hard can cause water to shoot out. Use a light, steady squeeze.
4. Step 4: Refill from a natural water source: Unscrew the nozzle cap to expose the filter. Submerge the flask in a stream, lake, or tap and squeeze the flask to draw water in through the filter. The filter removes bacteria and protozoa, making the water safe to drink. Screw the cap back on and drink directly. Do not let the filter touch dirty surfaces. Rinse it with clean water after each use.
5. Step 5: Clean the flask and filter after your run: Rinse the flask with warm water and mild soap. Remove the filter cap and let it air dry separately. For deep cleaning, use HydraPak Gear Cleaning Tablets or a bottle brush. Store the flask with the cap off to prevent mold. Never put the filter in a dishwasher or freeze it. Replace the filter after 150 uses or if flow slows.

Product details

• PackFlask+™ 750ml: Carry less water and filter on the fly. Building on the innovative PackFlask™ design, this enhanced system features an integrated filter for fast, reliable hydration on the trail. You can refill from any natural water source during a long run, so you carry less weight and never run out of water.