Direct thermal labels give you the option to quickly print as little as one label at a time or enough labels for a large mailing when you need a large space to print detailed information. Made from high-quality, bright-white material, these labels deliver superb printing results in compatible Dymo LabelWriter and Seiko Smart Label Printers. They are simple to format for addressing, shipping, filing and multipurpose uses. Each 2-1/8" x 4" label offers room for both address and bar code so you can organize and identify box contents and other projects. Size is great for packages, large envelopes or other identification uses. Customize with fonts and graphics. Adhesive is permanent to keep your label in place. Each roll includes 220 labels.