The perfect size label for return addresses or index tabs, these labels are designed for high-quality performance in both laser and inkjet printers. They are ideal for bulk mailings and identification. 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 80 labels. Letter-size sheets feed automatically from your printer's input tray.