Quick Summary
The AXEN 500 ml Soft Flask is a foldable hydration flask for running, cycling, marathon use and hiking. It is described as a soft collapsible water bottle with a bite valve and dust cover, and it comes as a 500 ml / 16 oz flask.
The flask is made from food grade TPU and is described as BPA-free. It is also stated to have a recommended temperature range of 0-60℃. If you plan to use it with a hydration pack, running vest or waist belt, check the fit against the exact holder you already have.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | AXEN |
| Capacity | 500 ml / 16 oz, which is the main size check for anyone planning drinks on the move. |
| Material | Food grade TPU, with a BPA-free claim stated for the flask. |
| Type | Soft, foldable hydration flask for carrying water during activity. |
| Included features | Bite valve with dust cover. |
| Temperature range | Recommended temperature range 0-60℃. |
What to Compare Before Buying
- Capacity: This flask is 500 ml / 16 oz, so compare that with how much drink you want to carry.
- Carry system fit: It is intended for hydration packs, running vests and hydration waist belts, so check the pocket or holder size.
- Mouthpiece style: The bite valve and dust cover are part of the drinking setup, so make sure that is the style you want.
- Temperature range: The stated range is 0-60℃, which is worth checking against how you plan to fill and use it.
Before You Decide
Confirm the 500 ml size suits your hydration needs and check that it fits the vest, belt or pack you plan to use. If the mouthpiece style and 0-60℃ temperature range work for you, this soft flask is a straightforward option for on-the-move hydration.






