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About our cooling technology

Glacier Tek cooling vests are powered by PureTemp, a nontoxic, biodegradable phase change material that freezes at a cool, but not cold, 59°F. The cooling technology is completely harmless to people, animals and the environment.

Weighing about 4 pounds, the Glacier Tek cool vests are comfortable and easy to use. They can recharge in about 20 minutes in ice and water, one hour in a freezer and a few hours to overnight in the refrigerator. The packs will last up to 2½ hours in a 100°F environment.

Cooling technologies offered by competitors fall short in a variety of ways:

CHEMICAL-BASED PCMs

Some PCM products use old-style petroleum byproducts, like hexadecane, which are hazardous chemicals.
  • Petroleum-based PCMs are not completely biodegradable and may take years or decades to decompose, leading to long-term effects on the environment
  • Some paraffins, and other petroleum-based products, are carcinogenic and may be toxic to plants and wildlife
  • Paraffins are derived from petroleum, which causes the price of the PCM to fluctuate based on the cost of crude oil
  • Paraffins can contribute to an increase in carbon emissions
  • Paraffins must be handled and disposed of according to hazardous material regulations in all 50 states and in most foreign countries

ICE AND GEL

Ice and gel pack PCMs are bulky, have a shorter cooling time and have the strong potential to sweat.
  • A fully loaded vest with packs typically weighs between 9 and 11 pounds
  • Since ice packs solidify at 32°F / 0°C, they can cause tissue damage with prolonged exposure to skin
  • Stays cool for only a short time
  • Will melt and produce condensation - leaving the wearer uncomfortably wet

EVAPORATIVE

Evaporative PCM technology relies on soaking the vest in water before putting it on, which can make the wearer uncomfortable after time.
  • Will only work in warm, dry air
  • Will not work in high humidity climates, which is severely limiting
  • Can cause skin irritation, bacterial growth, mold and foul odor
  • Will not work under any protective outerwear