Breast Milk Storage Bags with SmartStash™ Tracking






Category: Milk Storage
Same high-quality bag, new top-quality tech. Our durable, leak-proof bags are now designed with a scannable, AI-enabled code to auto-input your milk bag information into your digital stash in the Willow app. However you choose to pour and store, you’ll finally have the control and peace of mind you crave.
Buy direct from the source
Free delivery on orders $50+
2-year warranty on electric pumps (90 days on accessories)
Chat and Whatsapp 24/7 support
In-app support and guidance

Take the guesswork out of storing your stash.
Know exactly how much milk is in storage—down to the last ounce.

Use the camera in the Willow app to auto-add bag details to your digital stash

Always know how much milk you have stored in the freezer

Meet your pumping goals through this easy-to-use system
SmartStash™ Auto-Tracking
Each bag now has a scannable, AI-enabled code to auto-input milk bag information into your digital stash in the Willow app.
*T&C's apply. See Elvie.com for details.
**Exact out of pocket cost may vary based on your insurance carrier and insurance plan.
SMALLEST¹: Product depth vs. the top 5 best-selling electric breast pumps in the US, UK, Germany and France (Sales data from Q2 2021 to Q2 2022).
QUIETEST²: Acoustic testing in maximum expression mode vs. the top 15 best-selling electric breast pumps in the US, UK, Germany and France (Sales data from Q2 2021 to Q2 2022).
SMARTEST³: Number of app features available to control, monitor and track usage vs. the top 5 best-selling electric breast pumps in the US, UK, Germany and France (Sales data from Q2 2021 to Q2 2022).
SLIMMEST⁴: Product depth vs. the top 5 best-selling electric breast pumps in the US, UK UK, Germany and France (Sales data from Q2 2021 to Q2 2022).
1. vs. Elvie Stride
To verify please contact Elvie at [email protected].
Hero Image by: Fresh Pine Photography
Before you pay
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When it ships
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.
Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.
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Please contact us for the refund processing timeframe before returning an item.
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Standard Shipping · United States: $0.00
Express Shipping · United States: $3.99
View policyReturning an item
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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.
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