These weatherproof mailing labels are made of durable polyester to stand up against harsh weather and conditions. They resist moisture, scuffing, tearing and smudging. Permanent adhesive sticks to tough surfaces ensuring your label won't fall off your package. Compatible with laser and inkjet printers and easy to customize makes these labels the perfect solution to your mailing and shipping needs. Shape: Rectangular; Label Size - text: 2 x 4; Label Color(s): White; Color Family: White.