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A hybrid between a hard bottle and a soft flask, the UltrAspire UltraFlask 550 weighs just 1.7 ounces, has pocket-friendly ergonomics, and employs a simple high-flow drink-through cap.
The bottles is constructed of food-grade LDPE that is odor-and-stain resistant. It’s soft and squeezable, making it easy to drink without having to fight the bottle. An ergonomic curve makes it the ideal bottle for the “up front” pockets now found on many running packs (sold separately).
The 18.6 fluid-ounce capacity UltrAspire UltraFlask 550 is available in your choice of color options.
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