Pour a nice, hot cup of tea, and find your first clue as prints appear on your CSI heat-sensitive mug. Feel like part of the CSI Crime Scene Investigation team as you detect and analyze the prints on your mug. Just go to the CBS Store for your CSI mug; there's no need to set up a dragnet to find a CSI store. Relax, enjoy your drink, and work on your crime-solving skills.
This was a gift, as far as I can tell it functions well as a mug. It doesn't leak, holds fluids well. When you wash it it comes clean. Only time will tell if the image remains visible. The best use is as a mug, pencil holder and/or paper weight. The worst things are companies that ask for reviews on a mug. This was a novelity gift, and highly over priced!!! Would I get another, No.
Bottom Line No, I would not recommend this to a friend