Spill-Proof Milk Bags
Spill-Proof Milk Bags
Spill-Proof Milk Bags
Spill-Proof Milk Bags
Spill-Proof Milk Bags

Spill-Proof Milk Bags

All-In-One Milk Collection and Storage (48-Pack)

Meet the only disposable, spill-proof collection and storage Milk Bag. Our patented, no-spill technology lets you pump directly into self-sealing storage bags.

  • Essential to pumping with Willow (24 bags included in Pump Kit)
  • Offer truly spill-proof mobility - pump in any position (even lying down or doing yoga)
  • Pump on the go and toss into your purse or cooler bag - totally hygienic, no need to seal or transfer
  • Unique one-way valve so milk goes in and doesn’t come out
  • Pump and store milk in the same collection and storage bag
  • Fridge and freezer safe
  • Holds up to 4 oz. per pump (8 oz. total)
  • BPA free
  • Recyclable

$23.99

Free Shipping on Orders Over $70
Free Shipping on Orders Over $70
average rating 4.7 out of 5
Based on 30 reviews
  • 5 Stars
    23 Reviews
  • 4 Stars
    5 Reviews
  • 3 Stars
    2 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    0 Reviews
93% of reviewers would recommend this product to a friend
30 Reviews
Reviewed by Jennifer Z.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Leak proof!

Very happy with these bags, they are easy to use and leak proof. *This review was collected as part of a promotion.

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Reviewed by Haley R.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Game changing

My second child is 2 months old now and thanks to the willow pump my milk supply has stuck around this time. This time around I had the willow pump which allowed me to sleep more, especially when using the milk bags, however I only pump with milk bags when I’m either super exhausted or out and about with my toddler and baby due to the price of the bags. The container is more practical for getting the most out of your money spent on the pump etc. but the milk bags are certainly worth the splurge! I can get pumping, take a little nap and then pop the bags into storage, give the flanges a quick rinse and boom I’m all set! Saves me so much time and energy! *This review was collected as part of a promotion.

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Reviewed by Joey
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Make breastfeeding easier

I love the milk bags so much, saved up so much time, lying in bed while pumping. *This review was collected as part of a promotion.

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Reviewed by Ivana
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Easy to use and durable

I primarily use the milk containers for pumping. They're very easy to use, clean, and re-use. Most of the pumps I don't experience errors or leaks. I get pretty good output. *This review was collected as part of a promotion.

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Reviewed by Sarah B.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Great storage capacity

I love the freedom of the willow. I have been able to create a good freezer supply before going back to work. *This review was collected as part of a promotion.

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What's Your Willow Size?

For most moms, adding 2-4mm to your nipple size results in the most comfortable fit. All bodies are different - nipple and flange sizing is more of an art than a science! Our team is here to help if you need it.

Need help measuring?

If Your Nipple Measurement Is:
Then Your Willow Size Is:
23-25mm
27mm
20-22mm
24mm
17-19mm
21mm
15-17mm
19mm Sizing Insert in 24mm Flange*
13-15mm
17mm Sizing Insert in 24mm Flange*
11-13mm
15mm Sizing Insert in 24mm Flange*

Questions? Our experts can help.
1-888-WILLOW-3