This 100% polyester, white Wrinkle Band Tape is 1" wide and provides threaded loops to attach wrinkle band hooks to curtains and drapes. Simply sew the Wrinkle Band Tape to the top of your curtain fabric on the back side and use Wrinkle Band Curtain Hooks (sold separately) to easily hang your curtain. Another great use of Wrinkle Band Tape is to easily create pleated curtains. Once the tape is sewn to the back of your curtain, use the two pulling cords to cinch the fabric and create your desired pleats. Please note that if you pleat your curtain you will not be able to use the threaded loops to hang the curtain.