Featuring the same great hand-feel, this slosh-reducing, super efficient handheld now features insulated hydration to keep runners cooler, longer.
- 18 oz. BPA-Free insulated Soft Flask with bite valve
- Insulated properties keep fluids cooler 38% longer than non-insulated soft flasks
- The rigid ExoSpine creates 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
- Expandable stash pocket for essentials