A bombilla is a filtered straw for drinking yerba mate. In Spanish, it means "small pump." Indigenous peoples like the Guaraní used to make straws by cutting thin bamboo or reed stems. After the Spanish arrived, they began to be made from silver, which was abundant in mines. Today, in addition to silver, there are many types made from metals such as alpaca (called "alpaca" in Spanish) and stainless steel. They are about 15-20 cm in total length, with a tube thickness of less than 1 cm, excluding decorations. Material: Alpaca steel (Alpacas steel) Size: Approximately 14.5 cm To cool the hot yerba mate as it is drunk,工夫 (kufū - ingenuity/design) is applied by attaching a metal ornament in the middle of the straw part or by creating grooves on the straw's surface to increase the surface area and facilitate heat dissipation. Please understand that this is an overseas product and view it carefully before purchasing.