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- Weight: 3.1 oz. (including bottle). Volume: .11 L.
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The UltrAspire Ultra 550 is the ideal run flask for hydration on-the-go. Micro Fiber breathable mesh body. Adjustable strap for a secure fit. Comes standard with Ultra 550mL (18.6 fl. oz.) bottle. Super soft, easier to squeeze plastic. For soft feel and natural conformation to the hand. Dimensions: 3.5 x 2 x 8.5 in. Capacity: 550mL (18.6 fl. oz.). Weight: 0.19 lbs.