"Alcott Hill® introduces the new silver grommet thermal insulated curtains. The silver grommet top adds a modern touch and provides energy-efficient comfort. The sophisticated designs allow you to decorate your windows in great style. Blackout is perfect for late sleepers, shift workers, seniors, infants, parents, students, and computer operators. These feature innovative triple-weaved fabric construction allowing for single-layer, unlined thermal-insulated blackout curtains. Independent laboratory tests show these curtains block up to 95% of light and insulate against heat and cold. Bring warmth and style to your home with Alcott Hill®'s high-quality insulated blackout curtains. ** The darker colors are more effective in blocking out light and the lighter colors are less effective. ** White/Light colors are for room darkening.