This KDT Silver Touch Copper Glass Tumbler - Set of 12 is a combo pack of following items with given specifications as 12 X Silver Touch Copper Glass Tumbler : It is made up of Copper. It has storing capacity of 250 ml. It is Copper in colour. It weighs around 85 grams. It has approximate measurement dimensions as 10 X 8 X 8 (cm). Storing water in copper and silver pots for purification of water finds mention in ancient texts of Ayurveda. Storing water only for about three hours in a copper vessel can make water free from harmful bacteria. Drinking a glass of room temperature water washes the gastrointestinal tract, flushes the kidneys, and stimulates peristalsis. Copper is a good tonic for the liver, spleen, and lymphatic system and helps in curing anemia. The health benefits of copper include proper growth, utilization of iron, enzymatic reactions, connective tissues, hair, eyes, aging and energy production. Copper melts away the excess fat. Copper water helps in maintaining digestive health, reduces fat and alleviates excess obesity. Care Tips: *Clean your copper ware by hand and avoid dishwasher as the detergent can cause oxidation leading to permanent damage. *Use a solution of equal quantities vinegar or lemon juice and salt diluted With some water at such times but don't use it regularly. *Avoid scratchy cleaners like steel wool.