It does not, it’s fair to say, make its wearer look especially cool. But that’s not really what this hoodie is about. It has been designed to hide me from the thermal imaging systems of unmanned aerial surveillance vehicles – drones. And, as far as I can tell, it’s working well.

“It’s what I call anti-drone,” explains designer Adam Harvey. “That’s the sentiment. The material in the anti-drone clothing is made of silver, which is reflective to heat and makes the wearer invisible to thermal imaging.”

The “anti-drone hoodie” is the central attraction of Harvey’s Stealth Wear exhibition, which opened in central London last week, billed as a showcase for “counter-surveillance fashions”. It is a field Harvey has been pioneering for three years now, making headlines in the tech community along the way.