Concrete inflatable tent

A new development in Transporatable shelters provides an Tent sturdier than any other; In fact, it's made more or less of  concrete.

The canvas is constructed from a material that has the strength and endurance of your average construction  concrete, making it stable enough to be stood on and withstand flame. Like concrete, the material can be formed when damp. The tent is inflated, then left to dry solidly.

                                                               Here's a video on it:

                                                                - National Geographic