This slosh reducing, efficient flask feels great in hand and now features insulated hydration to keep you cooler, longer.
- 18oz / 535 mL BPA-FREE Insulated Soft Flask with bite valve
- Insulated properties keep fluids cooler 38% longer than non-insulated soft flasks
- 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 pocket