Body Armor Cooling Vest Invented by Veteran Police Officer Keeps Cops & Soldiers Less Sweaty and More Comfortable. There are three (3) main reasons why body armor is not comfortable. The first is the most obvious one: body armor does not breathe. Our skin is not designed to be suffocated. It's a living, breathing organ that needs to be exposed to ambient air. The second you put your body armor on, you restrict your skin's ability to breathe. This, in turn, causes increased perspiration, heat and trapped moisture. This trapped perspiration leads to a build-up of bacteria. Without adequate airflow, this bacteria builds up and leads to the dangerous skin rashes and infections that so many who wear body armor suffer from.