I ordered these curtains primarily for the winter to block the cold air from infiltrating the house windows. I made sure they puddles a bit on the floor to completely eliminate the drafts. They worked VERY well! Kept the living room much warmer and helped me keep my heating/electric bill down, so I was very pleased with that. The only reason for 4 stars instead of 5 is because they're pretty stiff...but I guess that's due to the nice thickness for blackout and thermal purposes. I'm currently using the rod pocket to hang them, but may switch to using hooks to pleat them for less bulky stacking when open.