The blackout roller shades are the ultimate sunlight-blocking coverings. They are the most efficient at preventing light from coming through, which makes them the ideal solution for media rooms, bedrooms, or any room where sunlight must be avoided.
*Note that the fabrics are blackout, but the overall effect is not absolute blackout. Blinds and shades cannot fit perfectly tight to the sides of the window, which creates "light gaps". Slats would scrape the window frame during motion, causing damage.