Fits perfectly in any Nathan hydration pack or vest flask pocket.The 42mm opening makes filling and cleaning easy, and the soft, conforming material carries comfortably in any pocket.
- Push Pull Bite Valve, for easy access to fluids
- Max fill design with wide flange and 3D bottom shape for more volume in shorter dimension.
- Flexible design shrinks as you drink reducing the movement and easily packs away when empty.
- Works great with all NATHAN® hydration vests and packs and other hydration vests that feature flask pockets.
- Does not feature ExoSpine™
- Capacity: 14oz/414mL
