StyleTech PHX6 Glow in the Dark vinyl is designed to glow for up to 6 hours on one charge. Unlike more industrial photoluminescent films that are made from acrylic, this product is made from PVC. This provides two key benefits. StyleTech PHX6 is considerably softer which makes for easier cutting, weeding, and handling. It's also much more flexible, which allows it to conform to simple curves. This vinyl contains no radioactive materials and is ideal for emergency markings as well as luminous signs, labels and decorations.