Extra ExtendedCool Cooling Packs Number of Packs:4 with adjustable straps for a

with adjustable straps for a flexible

so your clothing

1 UnderCool 3 cooling garment in your selected size and color

wherever you need cooling most

Check your cooling packs when they are fully melted (after use

Extra ExtendedCool Cooling Packs Number of Packs:4 with adjustable straps for aRefresh your ThermApparel UnderCool 3, RallyWrap, and UltraCool cooling vests with a new set of long lasting ExtendedCool cooling packs. ExtendedCool cooling packs freeze and melt at 70F (21C) to deliver strong, comfortable cooling. Think of it like a heat exchanger: the packs pull heat out of the blood flowing through vessels near your skin, and your body circulates that cooled blood back through your entire system, bringing your core temperature