Trim at home for the perfect fit inside or outside your window frame, then install in seconds without a drill, screws, or brackets — No Tools needed Block 99% of light for complete privacy, light control and UV protection for bedrooms, children’s rooms and movie rooms No cords for a clean look and child safety — use included clips to raise and lower shade Made of durable paper that will not yellow or crack from sun exposure Your No Tools window covering solution for over 30 years — works as a stand-alone solution, or easily layer behind existing window treatments