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 & Seiko Smart Label Printers. They are simple to format for addressing, shipping, filing & multipurpose uses. Each 2-1/8" x 4" label offers room for both address & bar code so you can organize & identify box contents & other projects. Size is great for packages, large envelopes or other identification uses. Customize with fonts & graphics. Adhesive is permanent to keep your label in place. Each roll includes 220 labels.