Ifblue Best Room Darkening Thermal Insulated Grommet Window Curtains -Blackout Curtains Drapes for Bedroom, Living Room, Kids Room-1 Panel 52 X 72 Inch, Black 100% Polyester Imported Blocks over 98% of light than ordinary curtains - Impedes 98% of light and UV ray, Save on up to 25% energy costs. Reduce noise levels by 30-40dB Better for Sound Sleep High-Quality Blackout Design & Fabric - Blackout curtain selects shading fabric of high quality. Use perfect layers of woven technology and ultraviolet semi-fiber technology. Saves on home heating and cooling costs - Microfiber thermal fabric keeps the room at a set temperature by insulating against either heat or cold. Security & Comfortable - Blackout curtain can protect personal privacy well; prevent the outside world to seeing internal activities. Washing & Maintenance - Machine washable for easy care, Wash dark colors separately.