The Concrete Canvas Shelter, created by the UK-based company Concrete Canvas, is a sustainable, prefabricated refuge that relies on water and air for its construction. Two people can set up the heavy-duty shelter in less than two hours. So, these waterproof, fireproof and potentially bulletproof shelters could be of avail when a natural disaster strikes.
The shelter could be molded into any desirable shape before it hardens. Prospective inhabitants could cover it with earth, sand and snow for insulation. Each Concrete Canvas Shelter promises a minimum design life of 10 years.