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Tailwind UltraFlasks™ Soft Flasks, designed in collaboration with HydraPak, 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 drinking Tailwind. The clear design eliminates guessing how much hydration you have left and when it's empty,
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efficacious & efficient
I got this flask with points and just wanted to check it out. I really like that it's supremely easy to clean. It sincerely DOES NOT LEAK--my friends and I were squeezing it (with a good amount of force if not a bit cautiously as we were at a restaurant) and it did not leak at all. When full, it's a generally pretty solid shape and as you're drinking out of it, it of course sags and loses it's shape, so obviously not necessarily a vessel for placing on a table.
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Erika · August 26, 2026
Super reliable
Love these soft flasks. They have a wide opening that makes it easy to fill fast.
