Best Window Curtain Liners of 2025

"I found these liners easy to install and they effectively block all light through my curtains. The size fit perfectly and the color matched the description well, even being white!"

"I ordered these for my guest room and they serve as a wonderful liner for cold weather. They are a light grey, almost indistinguishable from white, and they block out light effectively. I did have to iron them, but overall, they look great!"

"These liners are a perfect solution for my curtains that let in too much light. They've made my space cozier and I'm confident they'll help with insulation too."

"I was impressed by how well they block light. I initially thought they would be heavy and might pull my drapery rod down, but they're surprisingly lightweight yet fully effective. I might just get more of them!"

"I installed these liners in my art studio to reduce light interference, and they worked fantastic. Great price for the quality!"

"Installation was a breeze! My room instantly warmed up after putting these up. The material quality genuinely surprised me, and I would definitely purchase again."

"I never thought about using a thin blanket behind my curtains, but these liners block the light perfectly. They have truly helped my electric bill as they keep the heat in and the heater off. I wish I had discovered thermal curtains sooner!"

"I found these liners to be easy to install. They did arrive wrinkled, but a quick iron fixed that. They effectively block light and are not heavy at all. The included rings were a bit tricky to open, but overall, I'm very satisfied."

"I was amazed at how well these liners worked. Even during the day, they made my room dark! I would definitely purchase again, as they exceeded my expectations!"

"I installed these behind my IKEA curtains. They don't block out 100% of the light, but they make it dark enough to sleep in and still let in some morning light. They add bulk to my curtains, but I can live with that since they're effective and help with temperature control."

"Living in Alaska, I needed white liners for my red curtains. These liners are perfect; they provide shade during sunny days and protect my curtains. The hooks included made installation easy, and I feel like I got a great deal."

"I was looking for something to combat the intense afternoon sun in my living room. These liners made a huge difference! I didn’t need to buy new drapes, and they seamlessly blend in. During the day, you can't even tell they're there."

"As a day sleeper, I really needed a real blackout curtain liner to darken my room. After trying many others, I’m thrilled with these liners! They block 95% of sunlight and keep my room temperature comfortable. Installation was quick and easy, taking only about 5 minutes. They look great and don’t hurt my expensive curtains!"

"I purchased these liners to enhance my blackout curtains that failed to block all light. I wanted something that was lightweight and not bulky. They were incredibly easy to install and made a noticeable difference in blocking light, all while looking nice and not cheap. Plus, the price was very reasonable!"

"These thermal insulated blackout curtain liners exceeded my expectations! I was worried they wouldn’t be completely light-blocking, but they really do an excellent job at keeping both heat and light out. I was also pleased with how easy they were to install. The only small issue was a few slightly bent rings, but they worked perfectly!"

"I find these liners to be such a great and useful item that I’m surprised more people don’t talk about them. They easily clip onto my existing lightweight curtains, transforming them into blackout curtains. They also help block out heat from the sun. Sometimes, they stick out a bit when I open the curtains because they are slightly shorter, but adjusting them is easy. I highly recommend these for anyone looking to upgrade their curtains!"

"I was skeptical at first, but I decided to give these fantastic liners a try. They are excellent and required no ironing! I bought the Grayish White color and while they don't cover the entire width of my curtains, I expected that. For my setup, they effectively diffuse light while maintaining a nice appearance. Hanging them was straightforward, and I’m thrilled with how they look!"

"I’m very pleased with these blackout liners. They do a wonderful job of blocking the morning sunlight, which was a major issue for me. They are wide enough to fit my windows perfectly. Overall, they have made a noticeable difference!"

“I love the nice liner I received. It’s good quality and lightweight, which is exactly what I wanted. However, I was a bit confused by the color description; they are more of a light grey than white. I decided to keep them because they slide easily on my curtain rod and effectively block light.”

“As a shift worker, I appreciated how easy these were to install without needing to sew them onto my curtains. They do help to darken the room, but I wouldn’t call them true blackout liners. Still, it was a more economical choice compared to custom shades.”

“I bought these to use behind my semi-sheer linen curtains. They fit perfectly and provide the privacy I needed while blocking out light from the neighbor’s bright night light. I’m quite picky, but I’m very satisfied with how they look and perform.”

"I am very pleased with these blackout curtains. I was disappointed with my previous nursery curtains that hardly blocked any light, but these work beautifully! They are soft, well-weighted, and completely block the light. When they arrived, I noticed a slight odor, but it was barely noticeable. After washing, they smell fresh and pleasant. Overall, I'm thrilled with their quality, size, and light-blocking ability!"

"I bought these liners to block cold air and noise. They are made from heavy, quality materials and really darken the room. Installation was a breeze with the included rings. However, I eventually took them down because the room felt too gloomy. They're a solid product, just not for my daytime preference!"

"These blackout liners are worth the investment. They block light effectively and are easy to hang without taking down my existing curtains. I am very satisfied with their performance and would highly recommend them to others looking for good blackout solutions!"

"I received the 96" liners yesterday and am pleased enough that I ordered another pair this morning. They darken the room effectively and have a good weight. I had no wrinkles after using them in the dryer with a damp cloth. They do a great job of keeping the panels I like."

"I purchased two beautiful pleated curtains for my sliding glass doors, and after realizing they didn’t block heat, I decided to add these Eclipse Thermaliner blackout reflective white liners. They work amazingly for heat and provide an extra barrier for light and sound. I’m really happy with the outcome!"

"I’ve used these for years to line my custom drapes. They fit perfectly behind the drapes, and the morning sun doesn’t come in at all! They’re easy to cut to length and come with hooks. Great value for the price!"

"I find these curtain liners absolutely fantastic. Living on a heavy traffic road with large, poorly insulated windows, I noticed a difference immediately. The noise from the road was dampened, and less cold air was seeping in through the windows. Now I need to buy more of these curtains!"

"I purchased these for my bedroom because my boyfriend is a light sleeper. They turned our bedroom into a cave in the best way! The light blocking is great, and though my curtains were already thick, these made a noticeable difference. The sound reduction is what I’ve noticed the most!"

"I got these for my kids' room, which faces south and was always cold. The effect was immediate—the room is now warm even with the heat set lower. They also block noise and function as blackout curtains. Highly recommended!"