They are processed though a system know as sublimation, whereby the image changes from solid to gas back to a solid state again.
The image is then protected under the Polymer coating which means it cannot fade or crack
They are completely microwave & dishwasher friendly, and you can wash it a million times (although hand washing is recommended)
All our mugs are posted in double walled "Smash Proof" boxes (Royal Mail are good at testing them).
This means that your mug will reach you in the condition that you would expect.