This Iphone cover changes color depending on temperature

Kind of like a mood ring this iphone back cover changes color depending on the temperature. This self-adhesive laser cut backing will change colors in the range 90 to 95 degrees F – or just below body temperature. At only .005″ thick, it’ll fit nicely under any bumper you put on your phone too.

Watch as the backing changes color with heat from your hands, pocket, or anywhere else you might put it. It will even change colors to reveal outlines of it’s inner components while playing music, surfing, or while on a phone call!

Product site

Here’s a video of it in action!