We bought these pacifers for our baby before she was even born after researching the best pacifers to use for breastfeeding. We were very excited after researching and finding out these pacifiers had won many awards. Also, we did not know if we were having a boy or a girl so it was nice that the neautral pacifiers were clear instead of the usual yellow or green. We did not try these pacifiers right away since we were a little worried about "nipple confusion" everyone warned us against and probably tried them with her at about a month old. The nipple was WAY TOO big for her mouth and she had a horrible time trying to suck on it. We gave up on them for a while and tried a different brand which she really liked and then tried these again when she got a little bit older (almost three months) they were still too big for her mouth. The packaging says 0-6 months, but they are probably more for 3-6 months. Our daughter decided she didn't want any pacifier around 3 months so we never tried them again.