Keeping Breastmilk Cold

As the summer heats up, we’re all wondering the same thing- How do I keep my breastmilk cold when I’m out and about? Here are some tried-and-true ways to chill out about keeping your liquid gold safe from the heat. (And some answers to the burning questions I know you’ll have!)

Storing breastmilk in a cooler

Breastmilk can be stored safely in a cooler with ice/ice packs for 24 hours. This time range is a bit arbitrary because it doesn’t take into account ice melting/outside temperatures. If you are concerned about how cold your cooler is, consider buying a digital or analog thermometer to keep inside the cooler with your milk. The inside of your cooler should be able to keep milk at approximately 40 degrees. It’s a good idea to refresh ice frequently if you’re using lose ice as opposed to a frozen ice pack.

Is a hard-sided or soft-sided cooler better for storing breastmilk?

As long as you keep frozen ice packs or refresh your lose ice, it really doesn’t matter which kind of cooler you get. I have found that hard-sided coolers usually have the best ratings for keeping food colder longer. Splurge: Yeti Roadie Cooler Save: Coleman Chiller Series. There are really quality soft-sided coolers available nowadays, too! Splurge: Ice Chest Box by RTIC. Save: OPUX Soft Cooler Bag. While these coolers are larger and can store more than just your breastmilk, you may wish to get a breastmilk-only cooler like the ColdGold by Sarah Wells (save at sarahwells.com with code PUMPMOMMAPUMP15). As with anything you purchase online, I suggest reading through the reviews thoroughly. If you will be out in the sun all day (Like at the beach) or in a hot car, I suggest getting a quality cooler with great reviews for keeping cool the longest. (Pricier coolers generally have better quality insulation, in my experience.) You can always do a test-run at home with the cooler and a thermometer.

Storing breastmilk in a CeresChill chiller

Keep your breastmilk chilled in the Ceres Chill. In my opinion, their breastmilk chiller is a MUST-HAVE for pumping mommas on the go. You can put up to 24 ounces of breastmilk in the outer chamber with ice in the inner chamber, or you can put up to 12 ounces of breastmilk in the inner chamber and fill out outer chamber with ice! They even have a smaller version of their original chiller, but the original is the best seller. Learn more about this clever invention in my blog post titled: “Yes, you do need a CeresChill!” Use code: PUMPITUP to save at cerechill.com

Storing breastmilk in a mini-fridge

If you are staying in a hotel, call and see if there is a mini-fridge in your hotel room. If not, you may choose to bring your own mini refrigerator to store your breastmilk in. This refrigerator should keep your breastmilk at a safe temperature (35-40 degrees) just like your fridge at home. Breastmilk is best used or switched to a freezer within 4 days of being put into the refrigerator. For a smaller option, consider this personal sized mini fridge, or a plug-in cooler (This one has a car adapter or traditional wall plug option!)

Using dry ice to transport breastmilk

Dry ice is often suggested for use when transporting frozen breastmilk*, such as when you are moving cross-country and need to keep your freezer stash safe. Dry ice should never touch your frozen breastmilk bags directly, as it could burn through the plastic. Always use leather gloves when working with dry ice, and pack any free space in your freezer with newspaper or brown packing paper.
* I would not recommend dry ice for daily use.

Gimmie the FAQs

Frequently Asked Questions:

• What temperature is safe for storing breastmilk? The CDC recommends keeping milk at a refrigerated temperature of 35-40 degrees.
• What temperature even IS “room temp” anyway??? “Room temperature” is defined as the temperature range from 68-74 degrees. Breastmilk is good for about 4 hours at room temp.
• What do I do if I leave my breastmilk out in the heat too long? If your breastmilk sits out in the heat for longer than an hour or two, you should not feel it to your baby. Instead, give it a sniff. Smells like it’s gone bad? Toss it. Smells ok? Add it to their next bath! It’s terrific for their skin! (Or your own bath!)
• Can my baby drink cold milk? Absolutely! Some babies may be hesitant to drink cold milk if they are used to drinking warm milk. Try room temp first, and then work your way to cold milk. Feeding baby cold milk is also a good way to cool them off on a hot day!
• Will my baby get a cold from drinking cold milk? This is an old wive’s tale and not true. Cold milk is perfectly safe for your baby to drink. The common cold is a virus and babies cannot catch viruses from cold milk, so don’t worry!
• Why can’t I just put my breastmilk in my Stanley cup? If you put warm, freshly pumped milk into a regular insulated cup, it will keep your breastmilk warm. If you put freshly pumped milk into a thermal cup and place that thermal cup into the refrigerator or cooler with ice packs, you are actually insulating your milk FROM the cold! Yup! You’re keeping it warmer, longer, and the cup will actually protect your milk from the cold, not chill it.