The so-called 'Quantum Stealth' camouflage material is said to render its wearers completely invisible by bending light waves around them. Its makers claim the material, which is in effect similar to the invisibility cloak worn by Harry Potter, can even fool night-vision goggles.

However, its development is apparently so secret the Canadian company behind it says it cannot even show the technology in action and offers only mock ups of its effect on their website.

Nevertheless, Guy Cramer, CEO of Hyperstealth Biotechnology Corp, says he does not care that some observers remain sceptical as to his company's claims since 'the people that need to know that it works have seen it'.