Sun Zero Oslo Extreme 100% Blackout Grommet Curtain Panel, 52"X84", Black, 1-Piece Single Panel

The curtains are made of a very heavy fabric. The front of the fabric has a silky sheen to it, not like a satin, but silky none the less. The back of the curtain is covered in a thick black fabric that is absolutely 100% sunproof, lightproof, blackout. I held my curtain up to a spotlight. I couldn't see the spotlight through the curtain. Now, of course, the light does come through the grommets at the top of the curtain, but you can cover that with a curtain topper of your choice. The only thing that I don't like about these curtains is that they seem to attract dirt, dust and dog hair like crazy. I have a Plott hound-Mastiff-Rottweiler who drools more than he sheds, but his dog hair seems to want to be attracted to only those curtains and nothing else. I'm vacuuming the curtains with the wand attachments on a weekly basis. Other than that, I would highly recommend the curtains if you are looking for true blackout, theater, noise reduction (I forgot to mention that part. The noise from the streets below has decreased probably by 40% since I hung the curtains), and a decrease in heat (my bedroom feels cooler than it did prior to these curtains). The price was another great selling point. I was able get four panels to cover my bedroom window for the same price as 1 1/2 on Amazon or other online sellers.