The Chill-Its 6235 Standard Phase Change Cooling Vest is made to house phase change cooling packs to help keep workers cooler, safer and more productive. The phase change cooling material maintains a 64°F (18°C) temperature for up to four hours when activated. Made of a comfortable cotton blend fabric, this vest features adjustable hook-and-loop closures at the shoulders and waist to provide a customized comfortable fit. Apparel Type: Cooling Vest; Material(s): Cotton; Color(s): Khaki; Color Family: Brown.