Our direct thermal cold temperature labels and rolls are high quality white top coated paper with a moisture barrier and a general purpose permanent adhesive. Cold temp and freezer proof labels are designed to fit most direct printers including (but not limited to) Zebra, Sato, Datamax and Intermec. Freezer proof & cold temperature labels are ideal for printing variable data such as barcodes, shipping labels, and production identification. Our freezer safe labels are furnished on rolls or fanfolded and are perforated between each label. Roll labels have a 3″ core and an 8″ overall diameter. Most sizes are also with a 1" core and a 4" overall diameter. BLANCO's Direct thermal cold temp labels are wound out. Please call us at 888-325-2626 for additional core size, labels wound in, and non-perforated labels. No printer ribbon is required with these direct thermal labels.