First, measure the surface of your packaging container where you want to put your label. You can use this free printable ruler from enKo Products. 2. Next, choose a standard label size that best fits your measurement. You can check out the standard label sizes at enKo Products. 3. To specify the label measurement from your supplier, you can use the photo below as a guide. 4. Use the right label printer to seamlessly print your labels. We recommend the following reliable label printers:      • Dymo      • Brother Direct Thermal Printer      • Zebra Printer