Patented thermochromatic sublimation process. Mystique® coating disappears as mug heats up to reveal hidden message. Top-to-bottom full color imprint standard. Optional one color screen printed clue on top of Mystique® hints to your hidden advertising message (silver recommended vs white). US PAT# 6281165 US PAT# 6759099. US PAT# 6902775 US PAT# 7166333. Note: Full color […]