Glow-in-the-dark specialty gaffer's tape for use in safety marking and a multitude of applications in the audio/visual, television, photography, theatrical and motion picture industries. Constructed with a premium photo luminescent pigment that provides increased glow intensity and extended glow duration, P- 661 is hand-tearable in both directions, writable and printable with a non-smearing surface, conforms to complex 3D surfaces and removes cleanly when the job is done.