Safety glow photoluminescent tape, 2″w x 30’l roll, 523522p protect workers during blackouts and evacuations. Glow-in-the-dark tapes will glow 6+ hours. Safety glow photoluminescent tape comes with an aggressive permanent pressure sensitive adhesive that will adhere to most any clean, dry surface. Tape absorbs any ambient or uv light source, then releases this stored energy in darkness.