Pampers diapers are chlorine free however during the manufacturing process Chlorine Dioxide is used to purify the diapers fibers.
However it's not pure chlorine that is used but instead just Chlorine Dioxide which is less harmful to the baby or toddlers skin.
So when you buy the Pampers diapers and use them on the baby or toddler after they leave the factory the Pampers diapers won't contain any chlorine.
So that makes Pampers diapers a good diaper for babies and toddler with sensitive skin due to being chlorine free.