Reusable Breast Milk Storage Bags | World Breastfeeding Week – Zip Top

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“The first reusable 100% platinum silicone breast milk storage bag”

Reusable Breast Milk Storage Bags | World Breastfeeding Week

At Zip Top, we want to make breastfeeding simpler for moms.

That’s why Zip Top’s founder, Rebecca Finell, launched the first reusable pure silicone breast milk storage bag in 2020. With a long history in the baby industry - having founded Boon, a premium baby product company, in 2004 - she knew there were better options for nursing mothers than single-use plastic disposable milk bags and wanted to provide mom's with a better storage solution.

In honor of World Breastfeeding Week, we’ve teamed up with International Board Certified Lactation Consultant (IBCLC), Rachel Stone, to answer questions you may have as a new mom or a mom of many. 

Reusable breastmilk bag set on counter with baby sitting up and mom pouring milk from bag into bottle


Q: What could help ease the routines for moms (and dads) as they save, store, and prepare their milk for their babies? 

A: When storing breast milk, moms have a lot of concerns. They have to keep CDC storage guidelines in mind, make sure to not "overfill" the bag, and they want to know they're using a reliable product. The worst feeling in the world for a pumping mom is losing some of their precious breast milk to a faulty or leaking storage bag. In my experience, many disposable products can have these issues. Unfortunately, that's just the nature of things. With the durability of Zip Top products, these concerns diminish greatly.   

Q: What are the unique challenges working mothers face as they try to balance work and breastfeeding? 

A: Returning to work is one of the most challenging experiences for a breastfeeding mother. In fact, we know that it's one of the #1 reasons that mothers choose to end breastfeeding. If a mom feels supported during her transition back to work, it could mean the difference between meeting her goals and giving up. Storing breast milk should be the least of a breastfeeding mother's concerns and I believe the convenience of a reusable storage bag could truly replace their concerns with reassurance. 

Q: How do you see Zip Top milk bags helping with your clients’ breast milk needs?

A: Zip Top milk bags are durable, reusable, and safe. Working moms want reliable products that support their breastfeeding journeys and Zip Top milk bags help to propel working mothers forward. Mothers can go back to work with less stress! Mothers can continue breastfeeding! And with the help of companies like Zip Top, we can continue to support these moms with reliability.  

Zip Top’s breast milk bags are the first reusable 100% platinum silicone breast milk storage bag

Designed specifically for nursing moms, our products include several features to make nursing a little easier. 

Food Grade

Because Zip Tops are made of premium silicone, you never have to worry about  BPA, lead, PVC or phthalates. 

Freezer Safe

Zips shut and won’t crack under pressure or frozen temperatures. Our 6-pack of milk storage bags also includes a freezer tray for convenience. 

Reusable breastmilk bag set in freezer with mom reaching in while holding baby

Microwave Safe

Easy to Sterilize in the microwave for just a few minutes!

Dishwasher Safe

Zip Top's bags stay wide open and taper to drain well making it possible for them to get just as clean as anything else you put in the dishwasher. You’ve got a lot on your plate. Thanks to our durable design, you can let your dishwasher do all the cleaning. Reusable breastmilk bag set on counter with mom putting bag in dishwasher

Stands Up & Stays Open

Our milk bags stand on their own and free up your hands to make transferring your supply simple.

Pours Easily

No need to cry over spilled milk. Zip Tops are designed with corners that make pouring precise so you don’t lose a drop. 

How to Use

Prior to first use and after each use:

  1. Wash with warm soapy water or in the dishwasher.
  2. Sterilize by boiling the empty bag in water for 5 minutes or by filling it ½ full of water and microwaving on high for 2 minutes.
  3. Dry completely before use.
  4. Write date on bag.
  5. Pour breast milk into bag. Do not fill past the max link on the back.
  6. Squeeze excess air out and zip closure.
  7. Always store bag upright.

Storage Guidelines

  • Always store bag upright.
  • Leave at room temperature: 4 hours max.
  • In refrigerator: 3 days (optimal), 39° F and below
  • In freezer: 3 months (optimal) but no longer than 6 months.

*Do not refreeze breast milk


  1. Place bag upright in warm water or leave in the refrigerator upright overnight.
  2. Do not warm breast milk in boiling water or microwave.
  3. Always check milk temperature before feeding.
Reusable breastmilk bag set with model holding single filled bag in pot of water

If you have any questions about your milk storage bags or need help, feel free to reach out to us. We’re more than happy to help!