(Rastogi Handicrafts is our Trade Mark ) A handy Plain designed bottle leak proof, can be carried anywhere. New and Improved Cap is made to be screwed on and is provided with a silicone washer to give you a long and leak proof use. It is water tight with a seal that keeps the water out even when the bottle is upside down. Traditional Pure Copper Drink ware Bottle Utensils Comes with Guide Book of Rastogi Handicrafts Genuine Product , Benefit & Care tips This Bottle Comes With a Black Bag 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. Also avoid scratchy cleaners like steel wool.