Product description 8.5" x 5.5" USPS - UPS Labels Each package of USPS Compatible Labels (Shipping Assistant Labels) contains 100 sheets of 8-1/2" x 5-1/2" labels, two labels per sheet. These self adhesive labels are made from white smudge proof stock, and can be used on both Laser and Ink Jet Printers. This label is used by many on line postage and mailing programs.