Love your time together

Breastmilk Storage Bags - 4oz

Breastmilk Storage Bags - 4oz - Main image
$6 $11.99 In stock

Category: Breastmilk Storage

PROTECT YOUR BREASTMILK

Trusted by Parents Around the World

Lansinoh’s #1 selling Breastmilk Storage Bags are ideal for storing, freezing, and protecting your precious breastmilk. We make them with double sealed side seams and a double zipper for extra protection. BPA/BPS free.

BUILD YOUR STASH

Save Time Pumping Directly Into Bag

Save the hassle of milk transfers and pump directly into the bag. With a Lansinoh pump, you simply slide the bag over the Breast Flange Body and start pumping. 

Or use our pump-into-bag adapter (sold separately) with most other major pump brands. Learn more about pumping into bags here.

Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

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

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (4.6 / 5 · 5 reviews)

Joshua O. ★★★★★

These held up perfectly through two weeks in the freezer and a few trips in the diaper bag, with no leaks at all. The double zipper gives me real peace of mind when I'm pumping at work and rushing to store everything. I've already ordered another box.

Daniel ★★★★★

The double zipper seal snapped shut with a reassuring click, and after a week of freezing these flat, every single bag has thawed without a single drop escaping. I love that I can write the date right on the label area with a ballpoint pen without it smudging, and they hold the full 4oz mark perfect

James ★★★★★

I was skeptical about leaks since I’ve tried other bags before, but the double zipper seal on these held up perfectly through two weeks of freezer storage. They thaw flat and pour clean without any drips down the side, which makes middle-of-the-night bottle prep way less messy.