?IDEAL MAGNIFICATION FOR READING: All the magnifying lenses included in this papckage magnify up to 300%. It is considered the most comfortable magnification for reading small prints, ideal for Viewing and checking tiny hobby and crafting materials, small electronic gadget parts such as screws and pins ?NON-TOXIC & UNBREAKABLE MATERIAL: The lens is made out of optical grade PVC a superier material than other fresnel lens, which provides crystal clear image quality with minimal distortion, pefect for seniors with aging eyes and low vision individuals. ?3 BONUS BOOKMARK MAGNIFIERS: Each package comes with 2 page size sheets and 3 bonus bookmark magnifiers, due to it's compact size, its east and convenient to bring them with you so you will alwyas have extra set of eyes. ?LIGHTWEIGHT & PREMIUM MATERIAL: All the lenses are made out of Unbreakable & optical grade PVC, the largest one only weighs 1 ounces and it is Ideal for longer reading time, because of the weight advantage you will be able to hold it with minimal fatigue. ?LARGE VIEWING AREA: The Large US letter size magnifying sheet is measured 7" X 10.5" in viewing area which covers and Magnifies an entire page at once without having you to reposition it all the time as the other smaller magnifiers.