As many of us know. On clothes, upholsteries, curtains, and many other objects, Fabric does not look the same on one side as it does on the other. This Node Material solves the problem by taking your material and converting it into a backface material that will automatically be put onto the backside of your object. It is very helpful when creating different realistic materials. It requires a fabric Base Color (Normal and AO is optional, but helps).
The material is a node group with inputs of shader, base color, normal, ambient occlusion, and vector. Shader and base color are the only two required. You take your main Shader for your fabric material and put this at the end of your nodes. Then connecting in the rest of the textures will make an accurate representation of the backface.