Nathan's easiest, convenient 20oz soft flask yet! Perfect to hold by hand on a run, slip into a front vest pocket or stashed on your back. 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.

• Bite valve keeps liquids from escaping
• Works great with ALL NATHAN hydration vests
• Easy to clean
• Capacity: 20 oz/600 mL