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Circulatory Cooling Vests
Circulatory vests are the most advanced cooling vests available. Based on technology developed by NASA, these vests work by circulating cool water through non-kink tubing around the wearer's body. As the water moves through the system, it removes heat from the body, cooling you down. This water then flows back through the unit to a reserve of cold water. The circulating water automatically cools before being re-circulated back around the vest.