After remodeling our house for month we were ready to put up new curtains, and I knew I wanted something to help with temperature - it's been a hot summer and the windows aren't much help in the winter. I think these should work well; I purchased the white option to keep the windows light and bright, but they still do a nice job at blocking light when they cover the window. I was surprised that the material wasn't thicker, but it doesn't weigh down the window and hopefully will help with the weather this winter.