Veganlove, they're called prefolds because it used to be you could only get these huge pieces of cloth (now called flats) that you would fold in such a way to get the bulk in the middle where the pee would hit. Then I guess manufacturers got this great idea and "pre" folded them for moms and sewed them so they would stay that way. That's why they are thicker in the middle.
Just some diaper history for ya.
Just some diaper history for ya.










