Looking hot, in a cool jacket

Stone Island is an Italian company famous for pushing the boundaries in fabric development. The heat-reactive jacket is a prime example of this. 

Rivetti's Heat Reactive jacket changes its colour from black to green according the temperature.

It’s a liquid crystal heat-sensitive coating. Beginning at 27°C, the molecules within the coating undergo a rotation, modifying the light course. As a result the colour of the garment gradually begins to morph from the dark colour of the surface coating to the much lighter and brighter colour of the fabric base. When the garment returns to normal temperature, it recovers its original dark coating colour.

I love the thought that my clothes can change colour like a chameleon, although i wouldn't recommend wearing it on a first date or a job interview. Anxiety and stress rise the body temperature and you would be exposed!