Review on MAM Baby Bottle Nipples Extra Slow Flow Size 0 (2-Pack), Newborn & Older, SkinSoft Silicone Fits All MAM Bottles by Heather Gorman

Not as slow as preemie nipples but perfect for newborns. I started with these for my third baby from day 3 or so. Considering I started my last baby who was a 32 week preemie on level 1 MAM at 40w to start off with, these 0 nipples are pretty good. Baby #3 is now 9w old and still using these and we will probably go to 1s around 12w. These are especially good for breastmilk which is slightly thinner than formula. Once again, these aren't the slowest flow I've seen but if your baby only takes MAM and the 1s are just too messy right now then get some of these. Definitely a worthwhile investment considering I got 2 packs.