Willow: Wearable Breast Pump – Willow Pump

Willow 360® Spill-proof Milk Bags (48-pack)

Willow 360® Spill-proof Milk Bags (48-pack) - Main image
$15 $29.99 In stock

Category: Accessories

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

Hygienic Pumping for Peace of Mind

Bags are a “closed system,” ensuring milk remains totally free of contaminants after pumping.

How long does breast milk last?

How to thaw & warm safely

How to store breast milk on-the-go

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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If you need a refund

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Please contact us for the refund processing timeframe before returning an item.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning 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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Customer Reviews (5.0 / 5 · 5 reviews)

Andrew ★★★★★

Pumping directly into these bags has been a total game-changer for my middle-of-the-night sessions—the patented no-spill seal actually holds up, and I've never once had milk leak out in the fridge. Even with 48 in a box, I always go through them faster than I expect, but the convenience is worth eve

Adam ★★★★★

The self-sealing closure on these is so solid I’ve tossed a full bag into my diaper bag sideways without a single leak. The 48-count has lasted me nearly two weeks of daily pumping, and the direct-pump connection saves me a whole transfer step.

Violet G. ★★★★★

Pumped into these directly and not a single drop escaped when I pulled the bag out to stack it in the freezer. The self-sealing strip locks tight every time, which honestly saves me a whole towel and clean-up session each morning.

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