Sandals are an open type of footwear, consisting of a sole held to the wearer's foot by straps going over the instep and around the ankle. Sandals can also have a heel. While the distinction between sandals and other types of footwear can sometimes be blurry (as in the case of huaraches—the woven leather footwear seen in Mexico, and peep-toe pumps), the common understanding is that a sandal leaves all or most of the foot exposed. People may choose to wear sandals for several reasons, among them comfort in warm weather, economy (sandals tend to require less material than shoes and are usually easier to construct), and as a fashion choice. Usually, people wear sandals in warmer climates or during warmer parts of the year in order to keep their feet cool and dry. The risk of developing athlete's foot is lower than with enclosed shoes, and the wearing of sandals may be part of the treatment regimen for such an infection. History The oldest known sandals (and the oldest known footwear of any type) were discovered in Fort Rock Cave in the U.S. state of Oregon; radiocarbon dating of the sagebrush bark from which they were woven indicates an age of at least 10,000 years. The word is of Greek origin - : sándalon. The ancient Greeks distinguished between: : páxeia (Latinized as ; plural baxeae), a sandal made of willow leaves, twigs, or fibres worn by comic actors and philosophers; and : kóthornos (Latinized as cothurnus), a boot sandal that rose above the middle of the leg, worn principally by tragic actors, horsemen, hunters, and by men of rank and authority. The sole of the cothurnus was sometimes made much thicker than usual by the insertion of slices of cork, so as to add to the stature of the wearer. The ancient Egyptians wore sandals made of palm tree-leaves and papyrus. They are sometimes observable on the feet of Egyptian statues and in reliefs, being carried by sandal-bearers. According to Herodotus, sandals of papyrus were a part of the required and characteristic dress of the Egyptian priests. In Ancient Greece sandals were the most common type of footwear that women wore and spent most of their time at home. The Greek sandals featured a multitude of straps with which they securely fastened to the foot. The top of the sandals were usually of colored leather. The soles were