Peter Brewin and William Crawford, two students of industrial design engineering at the RCA, London, have created Concrete Canvas, a “building in a bag” — a sack of cement-impregnated fabric. To erect the structure, all you have to do is add water to the bag and inflate it with air. A few hours later the half cylinder-shaped shelter is dried out and ready for use.

The structure is almost as easy to transport as a tent, but provide better protection and is as durable and secure as a portable building, while being easier to transport.

Via Wired.