Tanning goggles are made of a type of semi-transparent plastic that keeps the UV rays out almost completely, while still allowing you to see slightly, like sunglasses. In fact, this goes back to the entire point of tanning goggles – to keep the light out. The manufacturers who make these goggles make them from the kind of plastic that blocks UV up to 99%. Peepers eyewear is uniquely designed to protect the eyes from ultraviolet light Before using, carefully try on the eyewear to ensure proper fit.