This luminous tape will glow in total darkness after exposure to artificial or natural light. Glows brightest the first 30 minutes after activation has ceased, but will remain clearly visible in a totally dark room to the night adapted eye for 4+ hours. The luminescent system applied in this marking tape is non-radioactive & non-toxic. Luminous tape is extremely helpful around camp, home or boat. Hundreds of Uses beyond your imagination. Features Ultra-tough luminous marking tape is great for high traffic areas and rough surfaces; Identify aisles, exits, and safety areas to maximize visibility and safety during power outages; Can be used on concrete floors; stair treads and risers; metal hand rails; and low-level walls to light the way to safety during blackouts; also can be used on helmets, sporting goods, mark tent lines and light switches, etc. Self adhesive sticks to rough surfaces; Glows in the dark after exposure to a light source; Durable provides 4+ hour illumination when the lights go out Light green phosphorescent laminated film Size( L x W) : Approx. 5m x 1cm/ 196.85 x 0.39" Package includes: 1 x Roll of 5m Luminous Tape
