400ml Anime My Neighbor Totoro Pattern Coffee Cup Heat-resistant Vacuum Travel Mug Stainless steel liner, food grade PP cup Lid, food grade AS cup body Size: 7.4*6.5*19.3cm / Capacity: 400ml Heat-resistant, non-toxic When put the boiled water into a cup, because of the physical phenomena, the inside surface of the cup will produce white fog, but about five minutes later it will disappear automatically, this is normal phenomenon, please be at ease to use. NOTE: Please don't put the just boil hot water into the mug and then upside down to use it.