Quick answer
Clean your HydraPak SOFTFLASK WMXS after every use with warm soapy water, dry it completely with the cap off, and store it uncapped and open to prevent mold.
Why proper drying matters
Soft flasks are prone to mold because moisture lingers in the folds and narrow nozzle. Unlike rigid bottles, you can't just shake them dry. The HydraPak SOFTFLASK WMXS's 42 mm nozzle and wide-mouth design help, but you still need to dry it thoroughly.
Skipping the dry step can leave a musty taste and harbor bacteria. A few extra minutes now saves you from scrubbing mold later.
What to avoid
Avoid boiling water, dishwashers, and bleach, which can damage the TPU film and pinch-weld seams. Stick to mild soap and warm water.
Don't store the flask with the cap on, even if it feels dry. Trapped air can still hold moisture.
How to clean, dry, and store your HydraPak SOFTFLASK WMXS
- Rinse immediately: After use, rinse the flask with warm water to remove residue. Don't let it sit—dried drink mix or electrolytes are harder to clean. Checkpoint: Always rinse within an hour of use.
- Wash with mild soap: Fill the flask with warm water and a drop of mild dish soap. Close the cap and shake gently, then use a soft bottle brush to scrub the inside, especially the bottom corners and the nozzle. Checkpoint: Avoid abrasive scrubbers that can scratch the TPU.
- Rinse thoroughly: Empty the soapy water and rinse several times with clean warm water until no suds remain. Leftover soap can affect taste.
- Dry completely: Turn the flask upside down with the cap off and allow it to air dry in a well-ventilated area. To speed up drying, you can use a clean, dry cloth to pat the inside or a drying rack designed for bottles. Checkpoint: Ensure the inside is completely dry before storing.
- Store open and loose: Once dry, store the flask with the cap off and the mouth open. Keep it in a cool, dry place away from direct sunlight. Avoid folding it tightly, as creases can weaken the material over time. Checkpoint: If you must store it folded, reopen it periodically to air out.
Product facts
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HydraPak SOFTFLASK™ WMXS - 500 ml: The HydraPak SOFTFLASK WMXS is made from 0.25 mm clear TPU film with pinch-weld construction and a proprietary tapered pinch-weld bottom. This lightweight, flexible material is easy to handle, but the folds and seams need extra care when drying to avoid trapped moisture.
HydraPak SOFTFLASK™ WMXS - 500 ml
