All baby bottles have the same basic parts: a container, a ring or collar, and a nipple. Despite the claims of many bottle makers, there’s no clear evidence that bottle feeding is a cause of colic, or that using any particular type of bottle can do anything to prevent it. “There is no evidence to support [the idea] that a breastfed baby needs a special bottle,” Peterson told us. Almost all baby bottle nipples are made from silicone (latex is another possible material, but we found that it was mostly used for disposable nipples). Since you may have to try multiple bottles before landing on the one your baby likes, it’s best to start with less expensive bottles.