The WM-21 Emergency Fire Starter Magnifier from Carson Optical is a great tool for both starting an emergency fire and reading fine print! This 2-pack of lightweight wallet-sized Fresnel magnifiers sport 2.5x magnification and a 6x spot lens. NOTE: Keep out of the reach of children. To get started, begin by putting on sunglasses. Ensure that the magnifier is facing towards the sun, and have a tinder bundle ready for use. When igniting a fire, position the magnifier approximately 7 inches (about 18 centimeters) away from the tinder bundle.