Our team of trail running enthusiasts designed this 500 mL flexible flask for comfortably transporting your drinks during your trail runs. Make yourself comfortable during your trail runs. Thanks to its flexible shape, your 500 mL flask is easy to carry in hand and can be easily stowed away in your bag or trail running jacket.
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Film: 100.0% Thermoplastic polyurethane, On/Off system: 50.0% Polypropylene, 50.0% Polyethylene, Bottleneck/Teat: 100.0% Silicone
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Our products are tested under the real-life conditions they were designed for. These tests are coordinated and supervised by a team of engineers. These tests allow us to design products that meet the needs of our trail runners.
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Rinse the bottle thoroughly 3 times when using for the first time. Do not leave water in the bottle for more than 24 hours. Rinse it with clean water after use and allow to dry before storing.
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France
Compact design
Save space thanks to the flexible and compressible material of your flask.
Noise level
The easy air removal system means your flask will stay silent while you run.
Lightweight
Run and feel light: Your flask weighs only 35 g when empty.
Ease of use
Drink easily thanks to the rotating the mouthpiece.
Mouth comfort
The accessible silicone bite valve makes it comfortable to use.
A flexible flask making your trail runs more comfortable.
The aim of our design team is to offer you flexible containers for you to use while you run. Compared with a rigid water bottle, this one is lighter, and less noisy and cumbersome when you run. What's more, it occupies less space: You can compress it gradually as you drink the contents, thereby reducing its volume!
How to maintain your flask?
To prevent residual plastic taste, rinse your flask in clean water 3 times before each use. Then, dry it upside down without the mouthpiece. If the plastic taste persists, place your dry flask in the freezer. You can remove the mouthpiece to clean it. This is especially important if you are filling the bottle with sugary drinks! Finally, to avoid any noise while running, remember to remove air by sucking out the air bubbles.
What is the flask's running time and what is it compatible with?
With its 500 mL (17 oz.) capacity, your flexible flask is useful for about one hour of running time, on average. To simplify your preparation and equipment, your 500 mL (17 oz.) flask is compatible with all our trail running bags and belts!
A user-friendly design for trail running.
Your 500 mL (17 oz.) flask has a thumb hole. This is to help you carry it effortlessly even when you have pushed yourself to the limit during your trail run. The mouthpiece of the flask has an on/off position. In the off position, you can avoid any nasty surprises during transportation. In the on position, your flask will not leak while you are running: Pinch the mouthpiece and suck to drink. Finally, the flask is designed so that you can drink without removing it from the front pocket of your bag.
How was the 500 mL (17 oz.) flask tested?
To guarantee the quality of the 500 mL (17 oz.) water bladder, our design team asked 12 runners to use it during a running session on a treadmill. Much more relaxed than a trail run, running on a treadmill gives you the opportunity to concentrate on the flow rate of the mouthpiece, the taste-free water, the lack of any discomfort when using the mouthpiece, the movements of the flask and the user comfort. We used the feedback provided by our testers to design a product for trail running.
4.5/5
(1813 )
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5 [translation_review-star]s
1239
4 [translation_review-star]s
351
3 [translation_review-star]s
105
2 [translation_review-star]s
58
1 [translation_review-star]
60
89% [translation_statistics-rating-breakdown-customers-recommend]
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Fri, May 23, 2025
Hiker
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: 3 to 8 weeks
: en_CA
I love how compact and collapsible this product is but the nozzle leaks all over me when I use it
| Lightweight | 5 | |
| Compact design | 5 |
Brand''s answer:
Hello, Thank you for taking the time to leave us your review. I am sorry to hear that one of our products did not meet your expectations. We value your feedback and we're continuously working to improve the quality and performance of our products. If you are not completely sat
isfied with your purchase, I invite you to reach out to your nearest store or the online customer service team to find a solution. Your feedback is taken very seriously and rest assured that it will be escalated to the individuals concerned in order to rectify this type of situation moving forward. We thank you for giving us the opportunity to evolve from this situation and hope that it will result in a better experience for all our future customers. Sportingly, Anthony Decathlon Canada CX
...Fri, Sep 13, 2024
Ines
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: 8 to 12 months
: en_CA
Handy for traveling! The spout howver is somewhat finicky and often doesn't open easily.
| Value for money | 5 | |
| Compact design | 5 | |
| Lightweight | 5 |
Wed, Jul 17, 2024
Anonymous Author
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: 4 to 6 months
: en_CA
I own 2 sizes (250 & 500 ml) and use this everyday running errands as it fits in a belt bag… but I also use it for hiking, running, camping. Such a convenient bottle and it collapses to a very small footprint when not is use.
| Value for money | 5 | |
| Compact design | 5 | |
| Lightweight | 5 |
Fri, Jul 12, 2024
Anonymous Author
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: 2 week or less
: en_CA
Ordered 2 for running vest and one came with a small cut in the side of the flask that leaked water overnight. Material feels way less robust than my other flasks which makes me worried that the one without a leak will develop one during a run.
| Compact design | 5 | |
| Lightweight | 5 | |
| Value for money | 2 | |
| Noise level | 5 |
Brand''s answer:
Hello, Thank you for taking the time to leave us your review. I am sorry to hear that one of our products did not meet your expectations. We value your feedback and we're continuously working to improve the quality and performance of our products. Your feedback is taken very s
eriously and rest assured that it will be escalated to the individuals concerned in order to rectify this type of situation moving forward. We thank you for giving us the opportunity to evolve from this situation and hope that it will result in a better experience for all our future customers. Sportingly, Anthony--Passionné de soccer et de course à piedPassionate about soccer and running
...Wed, Jul 10, 2024
Peter
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: 3 to 8 weeks
: en_CA
I store the flask in the front pocket of my Trail Running Hydration Belt. It seems well made and has a twist-to-lock mouth piece which is useful. My only quibble is the width of the neck, as it's quite narrow when it comes to filling. Overall, I think it's good value for money
.
...| Lightweight | 5 | |
| Compact design | 5 | |
| Value for money | 5 | |
| Noise level | 5 |
Mon, Jun 10, 2024
Patrick
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: 3 to 8 weeks
: en_CA
Easy to use, good enough for doing an ultra marathon
| Compact design | 5 | |
| Lightweight | 5 | |
| Value for money | 5 | |
| Noise level | 5 |
Sun, May 26, 2024
Brooke
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: More than 1 year
: en_CA
Love these small bottles for my running vest but they do take forever to dry out for storage
| Compact design | 4 | |
| Lightweight | 5 | |
| Value for money | 5 | |
| Noise level | 5 |
Brand''s answer:
Hello Brooke, Thank you for your feedback! We're glad to hear you love the small bottles for your running vest. We understand the drying time can be a bit long, and we appreciate your patience.Happy running! Sportingly, Pankaj
Tue, Apr 02, 2024
Celian
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: 2 week or less
: en_CA
These flask are good but it’s strange to have to chew on the tip to get water out of it. I’m surprised but since I’m not doing trail run since very long there might be a good reason behind it. Let’s see
| Compact design | 5 | |
| Lightweight | 5 | |
| Noise level | 5 | |
| Value for money | 5 |
Tue, Mar 19, 2024
Cleary
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: 3 to 8 weeks
: en_CA
Fits well in the Evadict vest from Decathlon. After a few uses and washes the chemical flavour is gone.
| Compact design | 5 | |
| Lightweight | 5 | |
| Noise level | 5 | |
| Value for money | 5 |
Sat, Jan 21, 2023
Water bottle
Terri
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: 8 to 12 months
: en_CA
Conveniently collapsible and very accessible in trail running vest!
| Noise level | 5 | |
| Compact design | 5 | |
| Lightweight | 5 |
Brand''s answer:
Hi Terri, Thank you for your review! We're glad to hear that you are liking our collapsible Trail Running Water Bottle. We strive to provide the best sports equipment for all of our customers, and we appreciate your feedback! Regards, Ravneet