These curtains are excellent....I got them for my bedroom and loved them so much I got them for my second bedroom. I live in Florida so it was very important for me to have something to keep the heat out in summer and keep the cold out in winter so my utility bill would not go crazy. I have tried other curtains that promised this but none have kept that promise, until I ordered these. This truly does insulate, I have had the first pairs over a year now and I know first hand how much of a differance the insulation makes. Beside their functionality they are very generously sized and the colors are rich and beautiful. I had to give a 5 star rating because they truly are worth every penny. Thank you from a very satisfied customer.