On Wednesday, January 25, 2017 at 5:58:23 PM UTC-5, wrote:
I use this in my hanger just encase.

First Alert 2013F Fire and Water Chest, 0.17 Cubic Foot, Gray https://www.amazon.com/dp/B000MPMEZ2..._B1sIyb1T5GJ8J

- uh, in case of what? If kept in a hot area (cockpit, trailer, etc) insulation will not keep contents cool for long.