Pro-Glow glow in the dark vinyl tape. Pro-240 glow tape has a non-radioactive chemical light source incorporated into a flexible vinyl film; that glows in total darkness after exposure to artificial light. There is no limit to the amount of times this tape can be recharged. Ten seconds is normally what is required for charging. Glow tape can be printed and die-cut to custom shapes and sizes. 18 mils thickness. Tensile: 50 pounds per inch tensile strength. 50 ounces per inch adhesion to steel. 100 Percent elongation.