Mainstay 72 Hour Challenge

The Mainstay Emergency Food Rations are a common “prepper” item for their emergency food storage. I have tasted this specific bar before, but I have never tried to go 72 hours with ONLY eating this bar for food. This video is Day 1 of my Mainstay Emergency Food Rations 72 Hour Challenge.

- 3600 Calories per ration.
- 5 year shelf life.
- Non-thirst provoking.
- Meets the US Coast Guard standards.
- Withstands Temperatures of -40° F to 300°F (-40°C to 149°C).



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