Blinds.com's Double Cell Blackout Honeycomb Shades from Blinds.com are the best-selling room darkening honeycomb shades we offer. Ideal for media rooms and day sleepers, these shades will completely darken your room, and the twin cell material provides excellent insulation, saving you energy costs.The double cells trap air and repel the summer heat and winter cold, keeping you comfortable. Made from a high-quality polyester fabric that won't fray, they are treated to resist stains and are anti-static to minimize dust build-up.