U.K.-based company Concrete Canvas took their Concrete Cloth concept (a flexible cement impregnated fabric that hardens on hydration) and used it to create quick, easy, and semi-permanent “buildings in a bag”. From Cool Hunting:
The special fabric transforms from a pliable, easy-to-store bundle into a fireproof, waterproof and potentially bulletproof shelter. Designed specifically to fit into natural surroundings, it can be covered with earth, sand or snow to offer insulation and extra protection from the elements or enemies. Once hardened, the shelters also have lockable doors, providing a higher level of security than traditional fabric structures.
Here’s a video of a shelter being deployed.
The shelters are available by e-mail order only.