This special design offer a combination of 100% real layer wood. The lightweight Layer wood frame offers a comfortable fit that is durable and sturdy at the same time. Our unique stainless-steel, double-spring hinges are sturdy and designed to keep their shape year after year. The lenses are specially designed so that they are both dark and polarized, offering 100% UVA/UVB protection even in intense lighting conditions. These glasses are stylish, durable, and natural. Each pair includes a durable black carrying case, a microfiber lens cleaning cloth and mini screw driver.