A few months ago we purchased the Noise Eliminator Window inserts for our bedroom windows. We live downtown on the third floor of a high rise building on a very busy street. We were expecting it to be somewhat quieter, but we didn’t expect them to be almost sound proof! We went from tossing and turning all night because of the constant street noise, to sleeping all night through. And because of the custom color matching of our current window frames, you can barely see them. We did the installation ourselves and it was very simple. I would definitely recommend this product to anyone needing a quiet room!