This Stainless Steel Multicolor Insulated Vacuum Flask Steel Bottle With Impeccable Rainbow-Multicolored Steel. The Bottle Allows For Hot Teas, Soup, Coffee, And Other Blends To Remain Consistently Hot For A Long Time. The water bottle is fully rust free.The bottle lid is completely leak proof ,Double-wall vacuum insulated and keeps liquids hot for 12 hours and cold for 24 hours.