Sun Zero Cooper Thermal Insulated Room Darkening Grommet Curtain Panels offer energy efficiency and elevated design with a woven texture complemented with a metal grommet top for easy hanging on a standard curtain rod up to 1.5"" in diameter. Sun Zero Thermal Insulated Room Darkening Curtains are laboratory tested to significantly reduce light exposure, offer outside noise reduction by up to 25%, and decrease energy lost through your windows by up to 40%. Comfort is optimized with thermal properties that help keep summer heat and winter chill out of the home. Hang in your living room for enhanced privacy, or in your bedroom for a sounder, more uninterrupted sleep.