Ideal for bulk mailings and identification, these shipping labels are large enough for both "Two" and "From" addresses and deliver jam-free 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 six labels. Letter-size sheets feed automatically from your printer's input tray.