Color: Ivory_Style: For Warm Water Only Start a warm life with a warm water-only mug. The Warm Water Specialist Mug. A mug specifically designed for warm water, which quickly cools boiling hot water to a drinkable temperature. A warm life you'll want to continue every day. Pour in boiling hot water and it reaches 60-65 degrees Celsius in about 3 minutes. Keeps warm for about 1 hour. Heat-absorbing structure. Quickly absorbs the heat from hot water, maintaining warmth at a temperature suitable for warm water. Large opening for easy cleaning and hygiene. Heat retention: 40 degrees Celsius or higher (1 hour) A mug specifically designed for warm water, which quickly cools boiling hot water to a drinkable temperature.