Guaranteed not to jam: The German technical standards monitoring agency TÜV Süd confirms trouble-free printing on all laser andd inkjet printersParticularly fast and secure adhesion, even on cool and damp surfacesBrilliant, razor-sharp print-outs thanks to extremely high whitenessSelf-adhesive labels on A4 sheets, permanent adhesion. Perfect for all laser printers and inkjet printers, copiers, colour laser printers and colour copiers. Guaranteed not to jam, with high-speed capability thanks to extra-strong special laminate, perfectly flat lay and all-round protective edge. Trouble-free print runs on laser printers and inkjet printers, tested and certified by TÜV SÜD. High whiteness and uniform surface for perfect printing results in black-and-white or colour.Perceptibly thicker: extra-strong labels, easy to affix. Very fast, reliable adhesion, even on cool, moist surfaces. Kind to the environment and sustainable: chlorine-free bleached, FSC® Mix Credit certified, solvent-free adhesive. Labels are 100% recyclable, dispose of as for waste paper, packaging made from recycled cardboard.