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Tailwind Nutrition Soft Flask

But don't take our word for it, read the reviews

  • 5
    Functional and great product

    Posted by Zach on 29th Sep 2020

    It works. And let’s be real, when it comes to long distance running, that’s all we want. I regularly run with my North Face vest and this water bottle fits nicely, forms to your chest/rib area, and has absolutely no leaking/swishing at all.

  • 5
    Great water bottle!

    Posted by Unknown on 4th May 2020

    I love this water bottle. It fits in my side pocket and I don't even know it's there; seals tight so no leaking. It also deflates as you drink so takes up less space as it empties.

  • 5

    Posted by Genelle Viars on 18th Feb 2020

    Works like a charm! Other brands leaked all over me, this one just works. I've just ordered another one. Thanks Tailwind for a great product.

Hydrapak's UltraFlasks™ are designed to conform to the shape of your body, compressing as you drink. This means reduced sloshing and bouncing, less spillage and an easier time sucking out that Tailwind goodness. 

The flexibility of the soft flask means it can fit into your existing gear: successfully tested with Ultimate Direction, Salomon and Nathan vests as well as countless bicycle jerseys and backpacks. Plus it's 100% BPA and PVC free and works with frozen or hot liquids (max temperature is 60° C or 140° F).


  • Clear Plastic - no more guesswork towards the amount of Tailwind left
  • Collapsible - Perfect bottle to use on multi-stage events or international events, it's only as large as the Tailwind being carried
  • Lightweight - weighing in at just 38g once emptied the flask is light as a feather
  • Pliable - Conforms to any shape, be it your hand, belt or high-tech vest

Dimensions: The hard plastic top of the flask measures in at 8.5 x 6.5cm wide and stands 7cm with the rest of the flask being able to collapse in to the hard top when empty. Holds up to 500ml/17oz.


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