Deep-freeze permanent blackout labels are designed to conceal any already existing information or labels. Ideal for re-labeling cryo vials, microtubes, and freezer boxes, to be stored in ultra-low temperature freezers (-80°C) or to be transported in dry ice.These cover-up labels will completely obscure the existing label and block-out the information underneath. Printable with all major brands of thermal-transfer printers, these versatile labels can withstand a wide temperature range, also suitable for high-temperature applications, as high as +120°C.