Made out of flexible PVC with a reinforced edge It ' s lightweight and won ' for t break Great for full page magnifier visual, fresnel lens solar projects, starter survival tools, and other daily house chores fresnel Lenses designed for people with low for vision, seniors, hobbyists and professionals Ultra-thin can be easily put into bag and wherever you go The sheet is for ideal for reading small print on maps, instructions or books and has the ability to magnify full pages, Manufacturer: Limtula