Chill-Its 6260 Lightweight Phase Change Cooling Vest with Packs, Cotton/Poly, 2X-Large/3X-Large, BlackDesigned to be thirty to sixty percent lighter weight than other cooling vests on the market, the Chill Its Lightweight Phase Change Cooling Vest helps to keep workers cooler, safer and more productive. Phase change cooling material maintains a 64F 18C temperature for up to two hours when activated. Constructed of a polyester cotton blend fabric, the vest's adjustable hook and loop closures around the waist provide a customized fit for different body