Om Creation Pure copper glass- Copper Tumbler- Copper water glass-Copper water tumbler, Copper cup for health benefits (Embossed Set of 4) Made of Pure Copper Drinking a glass of room temperature water washes the gastrointestinal tract, flushes the kidneys, and stimulates peristalsis Beneficial for health as mentioned in the Ayurveda Copper is known to be far more poisonous to bacteria than others, e.g. stainless steel or aluminum. Storing water only for about three hours in a copper tumbler can kill harmful bacteria. Made of pure copper, holds 200-250 Ml water