The first sandals with flat soles and a string extending between the big toe and the rest of the toes were already known in antiquity. Their oldest images appear in Egyptian paintings that are approximately 6000 years old. Footwear of this type has long been known throughout the world. In ancient Egypt it was produced with the use of papyrus and palm leaves, in Africa animal skin was used for this purpose, in India - wood, in China and Japan – rice grass , and in South America – fibers of various plants. Today they are made primarily of rubber – they are lightweight and versatile, perfect for the beach. In Australia vending machines selling flip-flops are as popular as snacks dispensers.