Well, generally speaking, this kind of sunglasses is made of tortoise shell. First, you should know that tortoise shell is a material produced mainly from the shell of the hawksbill turtle, an endangered species. And it was widely used until the 1970s in the manufacture of items such as combs, guitar picks and knitting needles, especially sunglasses. By using tortoise shell, it will make the sunglasses have a lot of advantages. For example, it has beautiful appearance. Also, its durability and its organic warmth against the skin make people feel well. By the way, the excellent bending properties are very wonderful. Because of the durability, tortoise shell sunglasses can be used for many years. However, nowadays, tortoise shell sunglasses refer to sunglasses with tortoise shell color. Sunglasses with the shell of the hawksbill turtle don't exist for protecting environment.
