Solar eclipse glasses are typically shade 12 or higher, with shade 14 being the darkest and most recommended rating for solar eclipses. These glasses are made of high-quality European welding shade 14 glass lenses, which block 99 percent of ultraviolet light and 97 percent of infrared radiation. They are specifically designed to protect your eyes from the intense light that could cause harm and compromise your vision during a solar eclipse. It is important to note that these glasses are far too dark to be used as normal day-to-day sunglasses. If you are unable to find solar eclipse glasses from a reliable source, it is recommended to avoid using ordinary sunglasses, neutral density or polarizing filters, or other alternatives that may not meet the necessary safety standards.