Hold Back Galaxy Curtain Hold Back is a method, that allows you to gather the curtain fabric and knot the tieback around it to keep it in place. Hard materials such as metal, plastic, and wood, on the other hand, make up holdbacks. To draw back the window curtain panels, this option screws into the wall. Hold Back Galaxy Curtain Hold Back is a beautiful metal or wooden knob that protrudes from the wall exactly next to the curtain. The knob's width prevents the curtain from falling back into the window.