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Plastic Free Breast Feeding

I’m on a plastic-free kick lately. Wanting to share so much more with the folks I work with, both expectant families and folks I see about general health care concerns.

Freezing-Breast-Milk-Mason-Jars.jpg

I was here thinking, probably like many of you, that switching to silicone was a good step. However, I got schooled a bit on silicone today by my work pal, Friday Apaliski, The Sustainability Concierge, and she helped me realize a few key details about certain storage options for breast milk. Turns out, glass and stainless steel are still the way to go, from start to finish if you’re going to be pumping, storing, and feeding through bottles. Silicone is a bit better than the thin plastics used in most baby items, but new research is showing how silicone items might also be leeching chemicals (and most silicone-based storage item and bottle have plastic fillers in them) when heated AND when frozen.

Some elements of switching to glass or steel take some effort, but mostly, you won’t notice a difference. Here are a few easy options :

plastic free ice cube storage
  • Stainless steel ice cube trays are more expensive than plastic or silicone, but are much more durable, just as easy (or easier) to use, don’t have any of the harmful chemicals that can get into your precious milk, and will last a lifetime. An investment in two trays should cover a good supply of milk and will carry over to freezing prepared foods for your baby when they’re eating solids or just as regular old ice cube trays. See the advice below on grease pencils for labeling…You can buy stainless steel ice cube trays for milk storage on Life Without Plastic and the Plastic Free Shop and probably loads of local stores.


  • If you want to store milk in glass jars in the freezer, you have to buy glass jars that run straight up and down. This means 12oz jam jars, pint jars, and 1.5 pint jars only. One case of any of these should suit you. Hopefully, you’ve picked some up for homemade broth and quick pickles to help fight off GBS in pregnancy so you already have some, but if not, you can find them at most hardware and grocery stores and all over the place online (I suggest NOT Amazon, if you can help it). Friday suggested putting the jarred milk in the freezer with the lid off till it’s frozen to ensure it can easily expand without cracking the glass. She used to mark the flat part of the lids with a grease pencil with the date of pumping. You can use any type of glass jar, including this Mason Bottle, if you are leaving the milk in the fridge.


  • You can fit your glass bottles right on to your breast pump! No need to pump into plastic and fiddle with transporting it into something else, unless you are freezing what you are pumping. Easy-peasy. No need to ever purchase ANY plastic bottles for babe. Here’s the rundown of the Best Glass Bottles according to The Bump. Ideally, you can switch away from plastic nipples, too, like these natural rubber nipples from EcoViking.

 Image via Friday Apaliski

Image via Friday Apaliski

Well, there they are…just a few easy steps and for the same cost and ease as the plastic alternatives. I’m happy to help you set up this plastic-free system through some postpartum consultations or through a separate consultations focused primarily on how to have a plastic-free, environmentally considerate, and healthier plan for postpartum. I can do these in-person in San Francisco, Oakland, and Berkeley or online anywhere. You can also check in with Friday if you want someone to do your green baby registry for you! How cool is that?

If you want more information on why you should switch away from plastics for your baby’s milk storage, check out these links :