I just love this curtain!! It is printed on a polyester type material, the back of the material is white.  I had put this up on my large sliding glass door to see how the curtain would hang. The material is of a good weight and it hangs well.  I happen to go outside (at night) and you can see the same print outlined from the other side of the curtain (just an unexpected surprise). The 3D quality of this curtain is so much fun. Its elegant.