The perfect companion for any walk or run. This large-capacity 18oz. soft flask fits great in front hydration vest pockets, or as an extra in the back storage or stash pocket. With the bite top, you can make sure that you have control of where your water or liquids go – straight into your mouth and not dripping out the top.

- Size: 18oz.
- Bite valve keeps liquids from escaping
- Works great with ALL NATHAN hydration vests
- Easy to clean
- Capacity: 18 oz/535 mL