Poly-viscose fabric (or just polyviscose) is a blend of viscose and polyester. Both are also made into clothing on their own, but are very different to wear and care for - see below. Blending polyester with viscose gives the best of both worlds, very affordably. Polyviscose is best described as a semi-natural or semi-synthetic fibre. http://www.hdl-nonwoven.com/spunlace-nonwoven-fabric/viscose-nonwoven-fabric/