Sun Zero Isidora Velvet Magnetic Closure 100% Blackout Grommet Curtain Panels provide the ultimate in light blocking technology coupled with magnetic closures on both sides of the panel to keep out even the harshest of light while adding elegant sophistication with a decadent velvet fabric. Sun Zero Total Blackout technology is laboratory tested to block out 100% of light, reduce outside noise by up to 40%, 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 your home. Grommet top design allows for easy slide-through installation on a curtain rod up to 1.5" in diameter. Hang in your entertainment room to eliminate screen glare and reduce distracting outside noise, or in your bedroom for enhanced privacy and a sounder, more uninterrupted sleep.