Our new soft flask with integrated hand strap creates ideal running efficiency! The grip-free, design features a patented ExoSpine™ to maximize comfort as the water level decreases.

• 12 oz / 355 mL soft flask with locking cap and bite valve keeps liquids from escaping
• 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
• Hand strap is removable, allowing soft flask to be used with Nathan vests
• Expandable stash pocket for nutrition and other small items