Sandal is a kind of shoes with exposed toes. It's mainly worn barefoot. It's airy and cool like slippers. However, sandals are thicker than slippers, with tails and more materials.
Sandals can be divided into many types: flat heel, slope heel, high heel, etc. Traditionally, sandals, like slippers, are not suitable for solemn occasions, running and driving. However, summer to the beach for a walk, leisure life, etc. is most suitable for wearing sandals. Because of its extremely simple structure, sandals are the first foot products in human history, which evolved from the original package. Sandals have appeared in ancient civilization, and their appearance and structure seem to be: tie a belt or rope on a firm sole.