Copper Mules is PROUD of our Pure Copper Tumbler Set of 2. These tumblers are of incredibly HEAVY and thick pure recycled copper. With a RAW copper interior these copper cups are offer the many ayurvedic health benefits. You will INSTANTLY fell the amazing quality of these copper cups every time you pick it up. For this amazing set of copper tumblers, we decided to include some equally awesome Top Grain Leather coasters. These are imported from Turkey, who produces some fo the finest leather in the world. They are then HAND dyed, laser engraved, and sealed for protection and durability.