Fully Working Thermochromic Effect: Characters cleanly fade when hot liquid is poured into the cup. Interior: Clean and well-maintained with minimal to no coffee/tea staining. Origin: Made in England.
The VTG 1989 Star Trek Transporter Mug Heat Changing Color-Activated Kilncraft-WORKS product would be an ideal choice for Star Trek fans and people looking for a unique, eco-friendly gift option.
