TechKewl Phase Change Cooling Vests
CoolPax is Techniche's unique Phase Change Cooling technology. Just put the CoolPax in a freezer or cold water for 30-40 minutes. Insert the now-chilled Cool-Pax into the vest and enjoy 2 to 3 hours of cooling. The Techniche Phase Change CoolPax inserts work in all temperatures and humidity levels. Plus, the inserts freeze faster than the plain water inserts!