Glacier Tek Flex vest is designed to provide cooling comfort in unpleasantly warm conditions, the vest is styled to look like every day casual wear, with 12 nontoxic cooling packs that tuck discreetly into specially designed pockets. The vest is made of soft, high-quality fabric that stretches to comfortably fit the body. Perfect for clean environments such as offices, homes or for light recreational use. Maintains a dry, comfortable 59° F for up to 2.5 hours in 90° F heat.