IF YOU NEED YOUR CURTAINS WITH BLACKOUT FUNCTION, BUT STILL WANT TO KEEP YOUR NON-BLACKOUT CURTAINS, THESE ARE THE KGORGE BLACKOUT LINERS TO BUY! FABRIC & DESIGN: 1. The soft and heavy-duty blackout liners apply triple weave technology, physical thermal protection, safe for babies and small kids. 2. Easy to install, the rings snap apart so you dont have to take your curtains down, placing them between the rings already holding your regular curtains, letting the blackout curtains just fall behind the outer drapes. And the tabs hold the rings can have a rod run through them as well. EXCELLENT FEATURE: 1. Blocking out 90-99% incoming light and UV ray, create a full dark environment to bring you a good sleep and better TV viewing. 2. Balances room temperature by insulating against summer heat and winter chill, suiting for a sun-facing room, bedroom, living room, nursery. 3.Provide a bit more privacy and soundproof with some existing curtain or sheer curtains. TIPS: 1. Machine washable, recommended hand wash or dry cleaning. 2. Keeping you satisfied and providing you with the friendliest customer service is our number one goal. - EFFECTIVE BLACKOUT: 2 panels per package, W40 x L80 each. The thick triple weaved fabric can enhance your curtain blackout effect up to 85%-99%(black works better than white), block the light and UV rays, offer a real dark environment for the night shift worker who has to sleep during the day. - ENERGY SAVING: Using the eco-friendly triple weaved fabric, formaldehyde-free, Azo-free, no odor, create a green life for you. These liners not only protect drapes, furniture, and floors from fading but also balances room temperature by insulating against summer heat and winter chill. - HANGING OPTION: Each pair of the liners bonus 13 hooks, which is super easy to install behind existing curtains by using the hooks or clip rings, makes the non-blackout curtains into blackout curtains. Also, the 2 diameter rod pocket can hang individually as well. - HOME DECORATION: KGORGE Blackout curtain liners can hiding perfectly, enhance the blackout function while keeping the decor you want, getting the room to darken anytime when needed. Even if the curtain changed, the durable liners can easily match your new styles. - EASY CARE: Good quality finishing will withstand years of use. Machine washable, keep the water temperature below 86. Low-temperature ironing.