As businesses grow, more innovation is required to keep ahead of your competition, and what better way to do so that use your competition to Market you?

The stunt shows a DHL ad printed on temperature-sensitive foil. When the packages are cooled, the ad is invisible, but once their temperature rises, the message was clear.

Competitors supposedly picked up a large black package for delivery, which after reaching a certain temperature, revealed a yellow box with the words, “DHL is Faster.”

See more in the video below.