Flip-flops are a type of light sandal-like shoe, typically worn as a form of casual footwear. They consist of a flat sole held loosely on the foot by a Y-shaped strap known as a toe thong that passes
Flip flops on feet being worn
Pair of leather thong ancient sandals from the New Kingdom of Egypt (c. 1550–1307 BC)
Zori (straw sandals) and Geta (wooden clogs) belonging to interned Japanese in the United States (1946), direct antecedents of modern-day flip-flops.
Zori, also rendered as zōri, are thonged Japanese sandals made of rice straw, cloth, lacquered wood, leather, rubber, or—most commonly and informally—synthetic materials. They are a slip-on descendant
Flip-flops
…as early as the ancient Egyptians in 1500 BC. In the United States the modern flip-flop may have had its design taken from the traditional Japanese zōri after World War II, as soldiers brought them back from Japan. Flip-flops became a prominent unisex summer footwear starting in the 1960s…
Zori were traditionally made at home, as were waraji. Note twine warp, held between hands and toes, and loose-fiber weft, to his right.
Pictorial instructions on how to weave wara-zōri or waraji in Hida Minzoku Mura Folk Village; woven footwear is uncommonly produced, especially for practical necessity, in Japan in the present day.
Similar roughly-woven festival zori, but with the straps wrapped in fabric before being twisted together