I recently discovered denim cotton fiber insulation that doesn't itch and is so easy to work with. No gloves or dust mask are required, making duct installation much faster and more enjoyable. I received this product as I was quite dissatisfied with the issues encountered when working with a generic fiberglass product earlier this year. This material is really a game changer due to its ease of installation despite being more expensive. As the cost becomes more efficient compared to fiberglass, I believe fiberglass insulation manufacturers will have problems. You still need to see several months of utility bills to see how the utility bills compare to a year ago. Will definitely buy in the future.