UltrAspire Softflask w/Bite Cap 500mL / 17 oz

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This collapsible SoftFlask carries 500mL of fluid. The unique shape allows this SoftFlask to slide easily in and out of a hydration pocket. Comes with a larger diameter top to fit ice cubes and keep fluids cool. Perfect to combine with the 300mL SoftFlask to carry more fluid or electrolytes if needed. Features a silicone Sheath Bite Valve.

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Part of our ultra-light series, the 500 ml is so light, you might forget you brought it. Weighing in at just over an ounce, it's optimal hydration, no matter what kind of runner you are. Its pliable material conforms to most pockets, it shrinks as you drink to minimize water movement and it can be used with or without the tube. Ultra light weight, ultra useful.

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