Quick Summary
The AXEN 150ml Soft Flask is a foldable running hydration flask designed for easy carrying during active use. It is listed as made from food grade TPU, BPA free, and suitable for hydration pack and waist belt use, with a durable bite valve and dust cover.
Who It Is Best For
This is a practical choice for people who want a compact soft flask for running, cycling, marathon events, hiking, or other outdoor activities. It may also suit adults and children who need a small, lightweight hydration bottle that packs away easily when empty.
What To Know Before You Buy
The flask is supplied as one 150ml or 5oz hydration flask, so it is best for buyers who want a small capacity option. The listed temperature range is 0 to 60℃, so check that this suits your planned use. The soft collapsible design is useful for carrying, but buyers should make sure the selected size meets their hydration needs.
Pros: Compact, foldable, and suitable for use with hydration packs and waist belts.
Cons: The 150ml capacity is quite small, so it is worth checking that it matches your intended activity.
Common Buyer Questions
What size is this soft flask?
It is listed as 150ml, which is also given as 5oz.
Is it suitable for running?
Yes, it is described as a foldable running hydration flask and is intended for running use.
Can it be used with a hydration vest?
Yes, it is described as ideal for a hydration running vest and a hydration waist belt.
What is it made from?
It is described as being made from food grade TPU material and as BPA free.
Does it have a drinking valve?
Yes, it has a bite valve with a dust cover and a silicone mouthpiece.
Key Details
| Detail | What it means in use |
|---|---|
| Brand | AXEN |
| Capacity | 150ml or 5oz |
| Material | Food grade TPU |
| Free from | BPA free |
| Design | Soft, foldable, and collapsible for easier carrying |
| Use case | Running, cycling, marathon, hiking, and other outdoor activities |
| Included item | One hydration flask |
| Temperature range | 0 to 60℃ |
Final Buying View
The AXEN 150ml Soft Flask is a compact hydration option for active use, especially if you want a foldable flask that fits a running vest or waist belt. Its small size, soft design, and bite valve setup make it a straightforward choice for short outings or top up hydration. If the capacity suits your needs, it is a sensible practical pick.






