How does the Chill-Charge SystemTM work?

The Chill-Charge System™ is based on storing and charging cold energy into the core of Everest that sits in the middle of the whiskey tumbler. Unlike regular tumblers, this massive half-pound glass structure will only be surrounded by the whiskey poured on top of it. The chill effect starts when the core releases cold energy from the core externally to your beverage and absorbing its warm energy.