We have gone to search for the artisans who can provide products to our specific requirements and expectations. All these bombillas are designed with a bigger lip to drink from, a sturdy curved stem, and a larger bowl to absorb the yerba without clogging issues. They are made of a heavier german silver, will not rust, and at most, the alloy may take on some of the yerba color with time. Very longlasting and beautifully crafted. These bombillas are made individually for YUYERO and no two are totally alike. Each represents a legend or a belief left behind by the natives who were the actual original yerbamate drinkers.