Las Botas, Mercado La Boquería / Spain, Barcelona
A bota bag is a traditional Spanish wine skin. Typically, it is made of leather, and is used to carry wine, although any liquid will do. Traditionally, bota bags were lined with tree sap or other resins to prevent liquids from seeping through. Modern bota bags have a latex liner. It was very handy for Spanish travellers. A goatskin is a container for wine, so called for being traditionally made of goatskin. In the Basque Country, the goatskin is known as a zahato (en.wikipedia.org/wiki/Wineskin).