Take handheld hydration to the next level of comfort and efficiency with this grip-free, ergonomic soft flask. The patented ExoSpine means the soft flask feels natural in your hand, even as the fluid level decreases. Works great with Nathan vests, as the durable spine allows you to easily store the soft flask in front pockets. It's so comfortable, you'll probably forget that you're holding it.
- 12 oz / 355 mL soft flask with locking cap and bite valve keeps liquids from escaping
- Integrated ExoSpine™ creates superior hand feel and support for the soft flask
- Ergo-designed hand-strap provides grip-free comfort, and maximizes running efficiency
- Hand strap is removable, allowing soft flask to be used with Nathan vests
- Expandable stash pocket for nutrition and other small items