Avery Shipping Labels w/Paper Receipts and TrueBlock Technology for Laser Printers 5-1/16" x 7-5/8", Pack of 50 (5127) Create professional mailing and shipping labels with receipts quickly and easily Works with popular internet shipping software and services, including USPS(R) Click-N-Ship(R), Stamps.com(R), UPS(R), FedEx(R), eBay(R) and PayPal(R) TrueBlock technology completely covers everything underneath Smudge-free and jam-free guaranteed Personalize with free templates and designs at avery.com/templates