Sun Zero Treviso Linen Blend Magnetic Closure 100% Blackout Back Tab 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 bringing a cozy feel to your space with its linen texture. 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. Hidden back tabs allow for easy slide-through installation on curtain rods 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.