D30 Back Armor Vent Holes

[Grumpy Goat]

No, I have not tried one of those. When I remove the back pad is to get more air swirling inside my jacket, and let the low humidity do it's thing.

These cooling vests do work quite well especially if the atmosphere is not humid, in which their efficacy proportionally falls off.

I suspect that re-wetting the cooling vests would be done about every 2 hours which, during a long travel day, would be the appropriate time (for good / safe journey management) for a brief rest / pee / splash of gas. And you wouldn't have to remove the back protection.