Snack time, but cooler. Snack packing made easy for busy days, quick bites, and fresh snacks on the go. Built-In Chill, Made For Real Life Snack smarter, wherever you are. The Freezable Upright Snack Box features PackIt’s patented ECOFREEZE® Technology, with built-in freezable gel that keeps snacks chilled for hours-no ice packs needed.