Printing Method: These are direct thermal labels, meaning they react to heat from a thermal printer and do not require ink or ribbons.Properties: Many of these labels are designed to be waterproof, oil-resistant, and scratch-resistant for durability in retail and logistics environments.Backing: They typically feature a blue or white glassine liner (the backing paper) for easy peeling and application.Common Sizes: You can find these in various dimensions, such as 40mm x 30mm, 55mm x 30mm, or 70mm x 20mm, depending on your printer and labeling needs