I was interested in these curtains because living in New England it gets extremely cold this time of year and oil to heat my home isn't cheap. That being said I try to find any solution on how to keep my home warmer. These curtains claim to help keep the cold out so I figured I'd try them out to see if that were true in hopes to help aid in keeping the cold out from our drafty windows. I was pleasantly surprised to see that the curtains do in fact help quite a bit with the draft from our windows.