23 years ago my Dad gave me and my sister a box that had at least 1000 bags. We just looked at each other and thought what the heck. He explained that he loved his grandkids but he did not want to smell dirty diapers in his house all day. As soon as my granddaughter was born I remembered that and ordered them for my daughter because I loved them when I was a mom. The only thing I could not remember was what MIL my Dad ordered so I guessed and ordered 2 mil but really we could have used 1 mil. However, I love these.