The Moscow mule cups set is delicately handcrafted from 100% high-quality solid copper in Turkey-Europe. Thanks to the tin lining inside of the copper mug, it can be used safely for drinking water, beer, vodka, wine, and other beverages. The authentic brass handle provides a safe and comfortable grip and adds an antique-looking elegance as well. Also, this copper drinkware is completely natural, safe, non-toxic, and lead-free.The handmade hammered copper drinking cups have an old, antique, unique, and vintage design. Thanks to its vintage elegance, it can be used for decorative purposes as well. It is also a fantastic gift idea for housewarming, anniversary, Christmas, birthdays, and so on.These copper Mexican martini glasses are handmade by talented copper masters in Turkey/Europe. With the hammered thicker body and authentic sturdy brass handle, these copper cups can be used for a long time.ATTENTION PLEASE:As a metal, copper will tarnish naturally over time. This can be prevented through proper copper cleaning techniques. DO NOT RUB these copper mule mugs with wire or any other kind of hard cleaning materials. Rubbing may lead to scratching the surface of your product and losing its features.Please consider that it is not recommended to store beverages in copper vessels for a long time.