Photo luminescent pigments absorb and store energy from normal ambient light. Tape will glow in total darkness after exposure to artificial or natural light. Excellent adhesive conforms and bonds to almost any surface, including cloth, vinyl, leather, plastic, metal, and laminates. Tears easily by hand without curling and conforms to uneven surfaces. Product has excellent resistance to UV light and does not show significant degradation when used outdoors. 1.88" x 10 yd.