Colour changing mug WOW 10oz, quality B

A colour changing mug with a guaranteed WOW effect! The colour changing effect reveals the printed image or message on a white surface upon pouring hot liquid into the cup. Protect from sunlight (not uv-resistant). Protect from exposure to direct light (not UV resistant). B-grade selection with minimal flaws in the surface compared to the A-grade mugs. Please note: the design shimmers slightly even when cold. However, it only becomes fully visible when you pour a hot drink into it.