I use Avery® 8126 White Inkjet Internet Shipping Labels. They come two labels per page. I have Paypal set to not print the shipping receipt, so it only prints on half the page (one label). If you want the shipping receipt printed, Avery also makes sheets that are regular paper on one half and a label on the other. You can get these at any office supply store. I get mine at Staples or Officemax.