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Nathan Insulated Soft Flask



What we think

This version of the 18oz. Soft Flask is insulated along with the trusty Bite Top – perfectly compatible with ALL Nathan hydration vests. This bite valve helps liquids from escaping so you can keep yourself hydrated without the mess.

If you have a Nathan product, this is your back up flask!


  • Size: 18oz.
  • Insulated properties keep fluids cooler 38% longer
  • Bite valve keeps liquids from escaping
  • Works great with ALL NATHAN hydration vests
  • Easy to clean
  • Capacity: 18 oz/535 mL

Nathan Insulated Soft Flask Reviews

Nathan Insulated Soft Flask Questions