The canvas is made of 4 layers, a fabric surface to hold the concrete pre mix in place, fibers that link the outer players together so it hold a uniform shape regardless the angle you use the material on, then you have the dry concrete mix and lastly you have a waterproof PVC backing.

Concrete Canvas is a low mass technology which uses up to 95% less material than conventional solutions. A single pallet of Concrete Canvas can cover the same area as two 17T concrete mixer trucks.