The OMM Ultra Flexi Flasks are soft, malleable drinking bottles designed to reduce in volume as you drink , eliminating the sloshing of liquid. They also allow you to squeeze the contents out so you don't have to suck on the container when it's getting empty. They come with either a bite valve or straw which are interchangeable. Ideal for liquids and gels.
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Soft compactable hydration flask with soft silicone bite valve, 250ml or 500ml.