Chill in Brew cooler panels were designed with the beer drinker in mind but are excellent for keeping anything in a cooler, several degrees colder than ice. This chill in brews freezing point of 28 degrees makes it uniquely suited for keeping beer or any other beverage at its coldest point possible. This panel is reusable for a lifetime, making it very economical choice for years of colder than ice coolers. Use chillin Brew panels with ice to keep ice frozen up to 50 percent longer. Store the cooler panels in the freezer for convenience. The panels should freeze in about 6-8 hours. Top rack dishwasher safe. The ice size is large.