Review for Nathan 18 oz Insulated Soft Flask with Bite Top – 2019
This soft flask provides big-time insulation for a big-time thirst. 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 18 oz. capacity
Triathlon Gear and Triathlon Wetsuits 
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