No really, Denim designer Naked & Famous has unveiled the first ever pair of jeans that change colors with your body heat. They start off blue and as you warm up they change to white.

The thermochromic jean is filed under the brand’s “Weird Guy” collection and is available at Barneys New York for $240. The Canadian brand is also behind fashion items like the pair of scratch-and-sniff jeans, glow-in-the-dark jeans, and also a pair of jeans so thick and heavy that it could stand on its own.

This gives a new meaning to the phrase, "That's Hot."