Clear Imaging: The handheld magnifier is made of good quality PVC plastic material, providing clear and pleasant viewing effects. The lens is made of optical grade PVC a material superior to other fresnel lens, which provides crystal clear image quality with minimal distortion, perfect for seniors with aging eyes and visually impaired people. < p>3X magnification: All magnifying lenses included in this pack magnify up to 300%. It is considered to be the most comfortable magnification for reading small print, ideal for viewing and checking tiny craft and hobby materials, as well as small electronic gadget parts like screws and pins. < p>The full page magnifier: The magnifier size of 7.09 x 4.72 inch and 3.34 x 2.16 inch. The large magnifying sheet covers and magnifies an entire page at a time without having to reposition it all the time like other smaller magnifiers. <br> Easy to use: Place the magnifying glass above the object to be observed, make the lens parallel to the line of sight, have a clear distance image, have a good maximum magnification, and find a better observation position when moving the identified object . <br> Wide range of applications: Thin fresnel lenses are well made, Start fires by concentrating the sun's rays, great emergency fire starter for survival kits. Suitable for reading newspapers, maps and magazines, suitable for family travel, experimental observation, etc.