The PlanetBox ColdKit was created to help keep PlanetBox meals cool throughout the day. The ColdKit allows you to cover your PlanetBox in a blanket of ice, which can stay cold for up to 8 hours. The IcePack is made with only purified water, so no yucky gel mess to worry about! The washable fabric Sleeve prevents the IcePack from excessive sweating. The ColdKit is the perfect tool for preventing “PlanetBox warming.” The ColdKit works with both the Launch and the Rover Systems.