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At Willow, we’re obsessed with helping moms reach their feeding goals. We got our start changing everything about how it felt and what it meant to pump freely. Now, we’re continuing to solve your biggest challenges…at every stage of your journey, no matter when or where you feed. Because moms deserve better.
Hands-free, fully in-bra pumps
Breast Milk Storage Solutions

Mom-first customer care
Based in the US and here to help you onboard, troubleshoot, and more.
Breastfeeding Essentials
Pump Parts and Accessories

Parenting education & services
Articles, videos, and 1:1 consults with lactation consultants and other experts.
Each Willow breast milk storage bags holds 8 oz (240ml), 100 bags per package
Leak-proof, double-zip seal for durability; Pre-sterilized with a tamper evident, tear-away top; Made without BPA or phthalate
This milk storage bag has a self-standing base for easy milk transfer; Designed with pour spout for easy milk transfer to a bottle
Willow milk storage bags can be stored in the refrigerator or freezer, and easily labeled with a marker or ballpoint pen
Trusted and True: Designed by the best in medical tech, Willow pumps and accessories are made with moms in mind; Join the 300,000 moms who have brought Willow into their homes and lives
8 reviews for Willow – 8oz Breast Milk Storage Bags – 100ct – Double Zip Seal for Durability – Freezer & Fridge Breastmilk Storage – Easy Pour Spout for Bottle Transfer – BPA Free – Breastfeeding Essentials
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$11.19

Jazmine Emard –
Never buying any other kind of breastmilk bag again!
Absolutely LOVE these! My favorite thing is that it holds 8oz instead of the usual 6oz. I was having to use x2 bags to store my milk with other brands like Lansinoh. Leak proof zipper-close and really like the pour spout on the top. Bag material itself is high quality. Worth every penny!!
Amazon Customer –
Life Savors while Nursing!
I really love these. They are easy to get the air bubbles out and poor into a bottle. I have been using a couple of different brands and these seem to be the most durable and best quality. I have a stack of them next to my bed for late night pump sessions and it’s so easy to open, fill and close, even in the middle of the night! Overall I think they are decently priced compared to others in the market. Highly recommend these for breastmilk storage, they won’t disappoint!
Chrissa H –
Highly recommend
Love these breastmilk storage bags. They hold 8 ounces per bag. Most of the other brands only hold 6 ounces. I also love the way that they are designed. It’s very easy to pour the milk in without spilling.
Tatyana Liz –
Hands down the best in the market
I absolutely love these. I’ve tried other brands like lansinoh and parents choice to name a couple and the willow bags have been my favorite. They are durable and leakproof. Just make sure you use scissors when you’re ready to pour and serve.
Lauren Young –
Great bags
Easy to pour milk from narrow neck bottle. Nice and thick back and easy to get the air out. No issues with the seal.
Tiara Luhn –
Accurate measurements, durable design, and freezes flat — the perfect milk storage bag!
I’ve tried so many different breast milk storage bags, and very few have markings that actually match the true amount or weight of milk inside — but these Willow storage bags are spot on! I was pleasantly surprised by how accurate they are. The bags themselves are thick and feel really durable, not flimsy like some others I’ve used. They’re super easy to open, lay completely flat for freezing, and store neatly in the freezer without taking up extra space. They also thaw beautifully. Overall, these are easily some of the best and most reliable storage bags I’ve used — love them! 💕
Elizabeth –
Good Quality
Sturdy, volume lines ate accurate. Nice feel to them. Seal is why I give a 4 stars I like double separate seals. Very easy to open almost satisfying.
Lori Colbert –
Thick, secure milk storage.
Perfectly secure milk storage bags. Easy to stand and fill. Pour spout can be easily accessed by snipping with scissors.