If you've been looking for a tent that can withstand a zombie apocalypse, look no further than the "Concrete Canvas Shelter". It's basically "a larger scale tent that's fully inflatable via an electric fan and is made from a concrete impregnated canvas that turns into concrete after adding water." Continue reading for a video and more information.
According to Dvice: "The Shelter, made by a U.K. based company is delivered in a flat-pack, protected from air and water until ready for use. The fan inflates the tent to the desired size and shape, just add water and voila - your instant tent. Once the water is added it takes about 24 hours to harden into a sturdy, fire and waterproof dwelling.