IDEAL FOR EVERYDAY USE - Use for full page magnifiers, fresnel lens solar projects, fire starter survival equipment, and other household duties. EASY READING - The magnifying sheet is great for reading small text on maps, instructions, or books, and may magnify entire pages. The handy 4.5 x 7" size allows you to see the entire page for books, periodicals, newspapers, and maps. PREMIUM Material - Our page magnifiers are thicker than others and PROVIDE GREAT MAGNIFICATION, resulting in excellent image clarity. DURABLE & MOBILE - Constructed of flexible PVC with a reinforced edge. It's not heavy and won't break. LIFETIME GUARANTEE - We know you'll enjoy your page magnifier fresnel lens, so we'll refund your money if you're not happy.