The Fabric Exchange Blackout Budget Drapery Lining Fabric by The Yard-White

Perfect. They block out light and temperature. I have the fabric velcro around my window and I can't feel the cool air come inside from the windows. I have old crank windows that are not even so air enters.

We ordered some blackout curtains from amazon. They were heavy and darkened the room decently, but we're not blackout.We are using this material to back those curtains with in order to create a true blackout curtain that looks nice.My wife had a piece of this material left over from a project at work and we used it on the window in the door near this kid's room. Works great and really highlights how bad the other "blackout" curtains really are.

Just what I needed to keep the porch light at my apartment out!

Awesome blackout fabric!! This is absolutely great fabric. It comes on the bolt so that you don't have to worry about it being wrinkled or bent. Minor complaint is that it does have a pretty strong smell when you first start using it. Keep in mind, if you poke holes in it, that area will show light through, so be mindful of where you plan your seams.

This stuff is terrible to work with do yourself a favor and don’t order ... stiff, plastic like material, slips on the feed dog theeth, won’t fold and stay folded you have to roll... I ended up scrapping the whole project ... I have worked with fabric and lining for curtains and drapes before and this is by far the worst stuff ever! Came from California but for the time it took to get here it would have been faster getting it from China. Spend a little more money and get something worth spending your time on