How Do You Choose the Right Nipple Size and Bottle Type for Your Baby?

When you go out there to search for baby milk bottles, you will find a lot of different sizes and types and whole other types of configurations. As you can probably tell, these bottles are different to suit the many different needs of a baby.
Not all babies are the same. Some would prefer a baby bottle that is easy to hold and that mimics the breast of their mothers, while there are also some that would want a much better flow rate so that they can have some much-needed nutrition- may it be milk from their mother’s breasts or those sweet baby formulas.

This post centers around some important information that will help you choose the right nipple size, as well as the right type of feeding bottle for your baby.

What Size?

Typically, feeding bottles come in small and large sizes. The former can take 4 ounces of milk at any time, while the latter can hold as much as 9 ounces. You may want to consult with your baby’s pediatrician for this, but as a rule of thumb, babies that are below 5 months should get the smaller bottle, while those that are much older should obviously get the much larger bottle. But again, it is best to ask your child’s pediatrician first.


If you are going to feed breastmilk to your baby, it is important that you feed them every 3-4 hours. That is because breastmilk contains more nutrients than baby formulas.

However, if you are feeding them formula milk, you have to feed them 2-3 ounces every couple of hours (depending on your baby, of course).

Nipple Flow Rates

Now, every milk bottle should be accompanied by a nipple as it will be the mechanism that will administer the milk to your baby.
That being said, the 1-size nipple is perfect for babies 0-3 months old. This is perfect for them since it is the one with the slowest flow rate.

Size 2 and 3 are perfect for babies 3-9 months old, simply because they have a much optimal flow rate for babies at those ages.

For babies that are older than the aforementioned age, you want to buy the fastest flow nipple, which typically has 4 holes.


Nipples are typically made out of either Latex or Silicone. Latex nipples are more flexible and are perfect for babies that want to nibble on it. However, because of their flexibility, it comes at a cost of less durability as well. So, if you opt for this one, you may have to buy a couple of pairs.

Silicone nipples are much firmer and can withstand the test of time. They are great for whenever your baby wants a much firmer grip and feel. This is typically used for babies that are much older than 5 months’ old, although there are special scenarios to consider.

My recommendation would be to buy a standard set for starters and then you can experiment with the other types so that you will know what your baby wants to use the most.