In the description for these curtain panels, they are listed as "blackout panels", meaning that they have a backing material in order to keep out more sunlight.  In fact, they do NOT have a backing and that verbiage in the description needs to be removed. Sunlight can still get through, meaning at some point, I will need to purchase plain white/ivory curtains to go behind these.  YES, they are otherwise as described -- polyester, emerald green window panels.