WATERPROOF LABELS: This set of 80 (4” x 2.5”) labels is great choice for durable shipping and address labels. The waterproof material is made to stand up to the weather and keep your mailing labels intact. STRONG SELF-ADHESIVE STICKERS: Our labels are made with a strong general-purpose permanent adhesive that aggressively holds to many different packages and surfaces. FOR LASER PRINTERS ONLY: Labels sheets are standard letter size (8.5” x 11”) and are compatible with all laser printers. SMUDGE PROOF: Prevent toner smears with our bright white customizable smudge-proof labels that give a professional appearance with each use. MADE IN USA: All of our premium labels are proudly made in the USA and are affordably priced to fulfill your home, office, and shipping needs.