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Stay hydrated for miles on end with this 18-ounce version of our slosh-free, ultra-efficient and super-comfortable soft flask handheld.
- 18oz / 535 mL BPA-FREE Insulated Soft Flask with bite valve
- The rigid ExoSpine™ for superior hand feel and support for the soft flask
- Ergo-designed hand strap provides grip-free comfort, and maximizes running efficiency
- Soft flask can be easily removed from sleeve, and used in NATHAN hydration vest pockets
- Breathable wicking mesh under hand position provides superior grip
- Small stash pockets for gels or a key