Mathienzo: Yerba Mate Gourd  Country: Argentina First produced: 2012 Colors: 6 Key Facts Materials Polypropylene: Resistant to corrosion and chemical leaching Resilient to most forms of physical damage (freezing, impact) Won’t melt in the dishwasher Recyclable Silicone: Non-toxic Can withstand … Continue reading Mathienzo: The go-to O.T.G. Yerba Mate Gourd