Keeps food cold without electricity or messy ice. Just put Coldmaster pan in the freezer for eight hours and it is ready to use. Food can be put directly into the pan and will hold at 40°F or below for eight hours. ABS construction with non-toxic refrigerant gel core. Fits standard size openings in food bars. Choose from Black or White. 12-11/16"Wx6-7/8"Dx6"H.