Sending valuable items in the mail can be a nerve-racking experience. But this specially designed tape reads "OPENED" when it is removed--so you will know if your mail has been tampered with. The tape is also capable of resisting splits, stretching, bursts and moisture. To make application a quick and easy process, white tape is housed in a blue ergonomic dispenser allowing for one-handed dispensing. Tape Type: Security; Adhesive Material: N/A; Tape Special Feature: N/A; Width: N/A.