Product Specifications: Prints are clearly intelligible during nighttime or in darkness.No toxin or radiation and environmentally friendly.Unique light storing material and cycling luminescence process.Luminescence of 6-12 hours after absorbing light for 5-15 minutes.Printe side: single side.Scope of application: printing of photos,proessional business design drafts, evening party playbills, advertisements and signs.Thickness:50um.Maximum width: 36inch.