The 4 Best Cooler Bags to Store Breast Milk


Traveling with babies can be quite challenging for pumping moms. Expressed breast milk can go bad easily so you need a reliable storage for it to last the hours ahead. One of the best solutions is to use a cooler bag to store breast milk. It’s simple and it works!

While there are various types of storage bags for breast milk, a cooler bag is specially designed to keep your breast milk at an ideal cool temperature so that it remains fresh for a certain amount of time. Many working nursing moms prefer this storage option.

Here are our top picks for the best cooler bag to store breast milk that we have pre-selected for you.

Our Pick: Skip Hop Grab-and-Go Insulated Double Bottle Bag

Our favorite is the Skip Hop Grab-and-Go Insulated Double Bottle Bag, Chevron. It’s the perfect storage solution when you’re headed out for a long day with your baby. This bag is insulated so that your baby bottles and sippy cups remain cold for up to four hours.

It can accommodate up to two bottles or two sippy cups but it’s also great for storing baby snacks. The bag has two-way zippers to give you easy access to single or double bottles. Best of all, it’s super easy to clean with its wipeable lining so your cooler bag stays neat and sanitized at all times.

Runner Up: Medela Breast Milk Cooler Set

The next best performing cooler bag to store breast milk is the Medela Breast Milk Cooler Set. This bag includes secondary containers for you to store and transport your expressed breast milk so you don’t have to worry about finding containers that would fit the bag.

The set already includes 4 breastmilk bottles with lids as well as the contoured ice pack. All the materials including the bottles are BPA free so you can be assured that this cooler set is safe for your baby.

Also Great: MIER Large Soft Cooler Bag with Dispensing Lid

For a mom who wants a full-size storage set that you can bring on activity-filled days, the MIER Large Soft Cooler Bag with Dispensing Lid, Multiple Pockets (grey and green) is the perfect solution. This is a large cooler bag that is ideal for a picnic, camping, beach trips, etc.

The bag is designed with a polyester exterior so it’s durable but easy to clean. The inside includes a waterproof PEVA so your baby’s milk bottles and food are safe and will remain fresh for hours. It features thick insulation to keep your breast milk cool for a long time or warm when you need it.

Budget Pick: Mommy Knows Best Breast Milk Baby Bottle Cooler Bag

The best affordable cooler bag to store breast milk on our selection is the Mommy Knows Best Breast Milk Baby Bottle Cooler Bag. It comes at an excellent price and it keeps your breast milk cool and fresh when you’re at work or traveling with your little one.

This affordable cooler bag will keep your milk at the ideal temperature for up to six hours. It’s a great solution that works and you don’t have to spend a fortune to ensure that your baby has a good supply of your fresh breast milk. The bag can fit up to 5 bottles or milk bags.

How to Choose the Best Cooler Bag to Store Breast Milk

The worst thing that could happen is to see your expressed breast milk go to waste after pumping. This is why it’s very important that you choose a good quality storage bag for the times that you can’t store your milk in your own fridge at home.

Below are the most important considerations when choosing the right cooler bag to store breast milk.

  • Size

    The size that you would need depends on the kind of trip you plan to bring your cooler bag to. Obviously, longer trips require you to choose a bigger size bag but you may also need a bigger bag if you’re the type that expresses a lot of breast milk than normal. You would need extra storage space for all the milk that you are producing in excess.

    However, it’s also important to keep portability in mind. Ideally, your cooler bag should provide plenty of storage for your milk bottles and still be compact enough. At the very least, choose one that is not bulky or has materials that are heavy on their own. You need to be able to carry your bag around easily.

  • Insulation

    The thicker the insulation, the longer the cooler bag can keep your breast milk fresh. Another advantage of good quality insulation is that the bag can also work for keeping bottles warm instead of cold when you need it to. Choose a bag with sufficient insulation and has a versatile function.

  • Portability

    You should also consider the exterior design of the bag and if it’s convenient to transport or carry around. If it’s a slightly bigger bag or medium in size, make sure that the shoulder strap has a padding. For smaller or more compact bags, check if there is an option to clip the bag in your baby’s stroller or car.

  • Easy Access

    Going on a trip with a little child requires that you have their milk bottles ready at all times. Your cooler bag should offer easy access to your milk bottles or sippy cups. Look for bags with zippers but remember that it should also keep the bag’s contents secure.


It’s truly a great thing that solutions such as using a cooler bag to store breast milk is available to moms today. It makes life a lot more convenient for working and active moms while allowing them to provide the best care for their babies. Choosing the right cooler bag comes down to several factors including good quality insulation, design, and storage space.

The cooler bags we’ve featured in this guide have been selected for their superior quality but nothing beats the Skip Hop Grab-and-Go Insulated Double Bottle Bag which remains to be our top choice.