Blackout and Thermal Insulation: The silver coating and black blackout surface of these blinds effectively block sunlight and UV rays, reducing heat in the room. Enjoy superior blackout and privacy, creating a comfortable, dark sleeping environment for improved sleep quality. No Drilling Required: Comes with 12 nano-adhesive tape pieces that can be removed without leaving residue, offering a better solution than suction cups. Ensures the blackout fabric stays securely on the window and can be easily removed and reapplied to other windows. If the tape loses its adhesion after repeated use, simply replace it with a new piece. Wide Application: These blackout blinds can be freely cut to size, perfect for homes, hotels, offices, or even caravans. Sold by the meter, they fit all sizes and shapes of windows. Portable and ready to use, these drill-free blackout blinds made of thick Oxford fabric are a superior choice to blackout films. Easy to Install: Install your window blackout in just three steps: Measure > Cut > Install. When cutting the sun protection blackout fabric, leave a 2-3 cm edge to prevent light from seeping through. Ensure the window is clean and dry before application.