This was our favorite outfit for my baby, but it didn't last long. The 3 month size fit our 7 lb newborn for just a couple weeks before he outgrew it. Buy a size or two up. It's one you'll want to keep for it's cuteness and easy to dress snaps.I love Zutano and own several Zutano items. I purchased this one for my two month old and it runs so small! I had to return it.This onesie is made of very soft fabric and has adorable bright colors.I do think the sizing runs a bit small.My baby outgrew this in a newborn while he was still wearing all of his other newborn clothes.