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
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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*

*Sizing Inserts fit 24mm Flanges and Containers only. Sizing Inserts, Containers and Flanges sold separately.

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