Color Changing Coffee Mugs

King of Pierogi Making Color Changing Mug

King of Pierogi Making Color Changing Mug. Our mugs are heat sensitive and change color to display your image when exposed to hot liquid. When the mug is cold, it appears solid black. Get one of our Polish coffee mugs today. They make a great gift.

  • 11oz mug
  • Handwashing and microwave safe
  • Black mugs are a slightly softer black than it appears in the preview where the design is printed.
  • The highest quality printing possible is used. It will never fade no matter how many times you wash it.
  • Printed and shipped from the USA