Durable thermal labels are scratch-resistant, smudge-free & resist water, dirt, dust & grease. Compatible with select DYMO ®, Seiko ®, Zebra ®, CoStar ® & Pitney Bowes ® label printers. “Use by date” indicated on package to guarantee print quality to date listed. Permanent adhesive. Roll format with a 1" core. Label Size – text: 1 x 2 5/8; Label Color(s): White; Machine Compatibility: PC Label Printers; Catalog Description: Address.