The post office wants all edges of registered mail packages taped with fiber reinforced paper tape. What they don't tell you is that the requirement for paper tape is mainly for putting their ink stamp on the package not for securing it. If you just want to securely tape a box then the clear plastic tape works better. This particular product went on cleanly and easily. The only issue that I saw was that the edges of the tape would curl up as the tape dried. Maybe I used too much water? Not sure.