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Look! Reusable Breast Milk Bags That Are NOT Made of Plastic (Microwaveable, Too)
PHOTO BY @ziptopcontainers/Instagram
  • A breastfeeding mom essential — especially if she's pumping and storing breast milk for her baby — are breast milk containers or bags. Many moms opt for breast milk bags because container bottles are too bulky and take so much space in a freezer or insulated bag. (Click here for mom-recommended breast milk bags.)

    Many breast milk bags available today are made of plastic — thankfully, they claim to be safe from harmful chemicals. But almost all of them are recommended for single-use only. Many nursing moms are left with difficult choices between space-saver single-use plastic bags or bulky but environment-friendly containers or bottles.

    The good news is that breastfeeding moms now have the option of using space-saving but reusable non-plastic breast milk bags, thanks to Zip Top, a brand of silicone zippered containers. The company, designed and headed by industrial designer and mompreneur, Rebecca Finell, recently launched their breast milk bags. (They have snack containers for toddlers, too!)

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    According to its website, Zip Top's products are made with 100% platinum silicone, the highest grade that passes all U.S. and European standards of food safety. They also do not contain Bisphenol-A (BPA), lead, polyvinyl chloride (PVC), and phthalates, which are all harmful to the human body.

    They're also safe to use in the oven (up to 220°Celsius) or microwave. Zip Top's breast milk bags are also safe in the freezer. They will not burst or leak, as long as they're filled up to the "fill line" to ensure there is room for liquid expansion when the milk freezes. It's also recommended to keep the bags upright. Don't worry, the bags have a flat base, so they won't be easily tipped over.

    The best thing about Zip Top is they're reusable, so that's a big plus for environment-conscious homes. The product is designed like a container with lid, except you don't need to worry about missing covers or matching them as you just zip them to seal. They're easy to clean, just wash with soap and rinse with water or put it on the top-rack of your dishwasher.

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    You can use a washable pen to write on the bags and label your breast milk and then wash it off later. To thaw out frozen breast milk, simply place the bag on a basin of warm water. It also has "pour corners" that make it easier to transfer the milk into a bottle when it's ready. This ensures that not a drop of your precious liquid gold will go to waste.

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    Zip Top's breast milk bag comes in one size and holds up to six ounces of breast milk. Since they're reusable, moms may feel less guilty just pouring in an ounce or two in each bag. Experts recommend to fill breast milk bags with small servings; you cannot re-freeze once you thaw breast milk.

    They're perfect for breastfeeding moms who pump breast milk casually, but they may be too pricey for those who keep a freezer full of breast milk. Then again, you really also don't need that much to continue giving liquid gold to your baby when you're back at work or just out during the day.


    Currently, Zip Top's breast milk bags are available on Target (they're still working to be available on Amazon). They're quite pricey, though, costing around Pho800 for a set of two or around Ph2,300 for a set of seven that comes with a tray. You also have to account for shipping costs since they're not yet available in the Philippines locally.

    Look at the price as an investment. Just think of all the plastic breast milk bags you wouldn't have to throw. Plus, if your baby has weaned from breast milk, there are so many other things you can use it for storage.

    How long can you store breast milk at room temperature or in the refrigerator (and not freezer? Click here to find out.

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