Best Home Fashion Thermal Insulated Blackout Curtain with Solid Back Tab, 104-Inch by 108-Inch, Black
I absolutely did not expect these to work for me, given their cheapness. I needed 100% blackout to create a space for post-production coloring work, and I had a lot of light coming in a couple windows. Amazingly, they block out all the light. Completely. I've since moved them to another office and am equally pleased. I can't speak to their thermal insulation qualities because I haven't used them for that purpose, but I can imagine they help a little bit.










