Nathan® Insulated Soft Flask with Bite Top 18 ounce :: Thirsty for maximum hydration? Your handy Nathan Insulated Soft Flask with Bite Top 18 ounce has you covered. Insulated to keep fluids cooler for 38% longer than non-insulated versions, an easy bite valve keeps liquids inside until you need a drink. Fits perfectly with all Nathan hydration vests.
KEY FEATURES + BENEFITS
- Insulated properties keep fluids cooler 38% longer than non-insulated soft flasks
- Bite valve keeps liquid from escaping
- Works great with all Nathan hydration vests
- Capacity: 18 ounce/535 mL











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