To the original poster Justin:
What is the duration of Cooling that the individuals are receiving with these packs? Perhaps 15-30 minutes?

I do like the idea of keeping the worker cool under their suits however if the packs are unable to maintain the cool temperature for at least 1-2 hours (one shift) then it seems to defeat the purpose.

Would love to hear your thoughts.

This is what i was thinking as well. We need to move forward quickly rather than trying to add new materials that could set us back or delay in rapid deployment.