Ideal for bulk mailings and identification, these shipping labels are designed for high-quality performance in both laser and inkjet printers. Bright-white label stock produces sharp text and rich colors. Labels feature permanent adhesive, and are acid-free, archival-safe and lignin-free to prevent yellowing or becoming brittle over time. Labels are easily formatted in popular word processing programs. Each sheet includes four labels. Letter-size sheets feed automatically from your printer’s input tray.