Durable thermal labels are scratch-resistant, smudge-free, water-resistant and resists dirt, dust and grease. Compatible with select DYMO?, Seiko?, Zebra?, CoStar?, and Pitney Bowes? label printers. "Use by date" indicated on package to guarantee print quality prior to date listed. Permanent adhesive. Label Size - text: 1 1/8 x 3 1/2; Label Color(s): White; Machine Compatibility: PC Label Printers; Material(s): Paper.