We purchased this product for basement windows that were very drafty in the winter. It was pretty easy to put on the window, even if you had no one helping you. It did shrink down nicely with the hair dryer. We put the plastic on 2 winters ago, left it up for the summer since we don't open those windows anyway, and now after 2 winters and 1 summer the plastic is peeling off the window. It lasted quite a decent amount of time (usually people only leave it up for 1 season). It definitely helped keep the basement warm in the winter, you could see the plastic bowing out with the air that was trying to get into the basement. I'd use this product again.