These fit your regular swiffer dusters and are about $2.00 or $3.00 cheaper when you go to dollar general and get these. Well I was one who didn't figure there would be much difference and yet its just a big waste of money because there nothing really like the swiffer. They are bad for moving dust from place to place, they wear out way to easy after dusting maybe one or two things. They don't trap the dust in like swiffers do, and they almost fall apart after use, you can maybe use them twice depending on all you do with it. This is a awful comparison and really its worth the money to pay for the swiffer than these cheap imitations. I have allergies bad with dust so that is why i switched to the swiffer and with these every time we use it my husband has to and I have to step outside or I start sneezing, if I wanted this same reaction I would have just stuck with my original dusters I used to use long time ago and safved my money.