Do Lansinoh bags leak?

Many users report leaks, sometimes through the double zip, especially during thawing; however, some have never experienced leaks.

Why are the measurements on Lansinoh bags inaccurate?

Users consistently note that the printed volume markings are unreliable, and recommend measuring by pouring from a bottle or weighing.

Is it safe to freeze milk in Lansinoh bags?

Yes, but some bags have split after freezing, so careful handling and placing them in a container while thawing is advised.

Lansinoh

New Lansinoh Breast Milk Storage Bags 6oz (100-Count)

5/5 (1)

$9.99$23.49-57%

In Stock

Lansinoh Breast Milk Storage Bags are pre-sterilized, 6-ounce polypropylene bags designed for storing breast milk in the refrigerator or freezer. Each bag features a double zipper seal and reinforced side seams to prevent leaks, and is compatible for direct pumping with Lansinoh breast pumps. The bags are BPA- and BPS-free, with a measurement scale on the front, though some users report occasional leakage and inaccurate volume markings.

Material: BPA and BPS-free plastic
Gender: unisex
Category: Baby & Toddler > Nursing & Feeding > Breast Milk Storage Containers

View on merchant site JSON

GTIN: 044677204705
MPN: LANSINOH-044677204705-NEWOVERSTOCK

Specifications

Safe, secure breastmilk storage bags designed for freezing and storing breastmilk. Features a double-seal zipper, reinforced seams, and a teapot-style spout for easy pouring.

Helps protect breastmilk nutrients; super strong and durable with reinforced double-sealed seams and double zipper; presterilized and safe, BPA and BPS-free; new color-changing double zipper for visible secure closure; updated teapot-style spout for easy one-handed pouring; compact storage by laying flat for ultra-fast freezing and thawing.

Material: BPA and BPS-free plastic
Gender: unisex
Age Group: infant
Condition: new
Category: Baby & Toddler > Nursing & Feeding > Breast Milk Storage Containers

Additional Attributes

super strong and durable
double-seal zipper
reinforced seams
teapot-style spout for easy one-handed pouring
presterilized
BPA-free
BPS-free
color-changing zipper for secure closure
ultra-flat design
freeze-flat for compact storage
compact storage
pump directly into bag
6oz capacity
helps protect breastmilk nutrients

Image Analysis

1 images

01high: Studio product shot showing a Lansinoh retail box of breastmilk storage bags and one upright plastic storage bag with measurement markings and a resealable zipper.
OCR: Lansinoh. Breastmilk Storage Bags. Super strong & presterilized for safe storage. 100. Lansinoh. Breastmilk. 180 150 120 90 60 30 ML
paperboard retail box with hanging tabplastic resealable breastmilk storage bagzipper-style resealable closuremeasurement scale with numeric markingsprinted product photograph on boxpurple panel on box frontcoral pink band on box lower frontblue and purple printed text and logowhite studio backgroundclear graduated markings on bagnotched pour spout area on bag topsmall instructional icons printed on bag

Brand PDP Lookup

Brand: Lansinoh
URL: https://lansinoh.com/products/breastmilk-storage-bags

Lansinoh Breastmilk Storage Bags | Breastmilk Freezer Bags

Also Seen Here

4 retailers

walmart.com
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Lansinoh Breastmilk Storage Bags, 100 Count, Fast Freeze & Thaw, 6 oz HSA/FSA Eligible
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target.com
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Lansinoh Breast Milk Storage Bags - Fast Freeze & Thaw - 100ct
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amzn.to
high
Lansinoh Breastmilk Storage Bags, 100 Count, Baby Essentials, Fast Freeze & Thaw Breast Milk Bags for Baby Bottle Feeding, Strength & Stretch, 6 Ounce
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iron-med.com
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Lansinoh Breastmilk Storage Bags, 100 Ct.
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Documents & Data

Customer Reviews

1 reviews · out of 5

Thank you!

★★★★★Cheryl

Thank you! Great prices and great items.

Reddit Insights

6 threads · r/ExclusivelyPumping, r/breastfeeding

Lansinoh breast milk storage bags are popular for their accessibility and flat-freezing design, but many users report frequent leaks and inaccurate measurements.

mixed sentiment95% match

While some users praise the convenience and availability of Lansinoh bags, a significant number express frustration over leaks, thin material, and inaccurate volume markings, leading to a slightly negative overall sentiment.

Themes

Leakage problemsnegative

Inaccurate measurementsnegative

Convenience and flat freezingpositive

Storage and organizationpositive

Comparison with other brandsmixed

Use Cases

Freezing breast milk for later use
Pumping directly into storage bags
Storing milk in the fridge

Watch Out For

highHigh risk of leakage, with milk seeping through both zipper seals

mediumVolume markings are often inaccurate, leading to measurement errors

highBags are thin and can split during freezing, leading to lost milk

lowThe extra flap above the zipper can cause spills when pouring milk in

Community Q&A

Do Lansinoh bags leak?: Many users report leaks, sometimes through the double zip, especially during thawing; however, some have never experienced leaks.
Why are the measurements on Lansinoh bags inaccurate?: Users consistently note that the printed volume markings are unreliable, and recommend measuring by pouring from a bottle or weighing.
Is it safe to freeze milk in Lansinoh bags?: Yes, but some bags have split after freezing, so careful handling and placing them in a container while thawing is advised.

Compared To

vs Medela

Medela bags are often mentioned as a more leak-proof alternative, though some find them stiffer and harder to lay flat.

vs Momcozy

Momcozy bags are favored by some for features like a temperature sensor, but overall less commonly used.

vs Kiinde

Kiinde bags are praised for their durability and screw-on lids, but criticized for bulkiness when freezing and higher cost.

Source Threads

General brand comparisons and recommendations
I have been using samples of lansinoh breastmilk storage bags which I like... I love my lansinoh ones!! I haven’t had any issues with leaking... I use Lansinoh. I get them free through insurance... I’ve used Medela and agree with the other user’s post about Medela being stiffer. I find them harder to lay flat... Momcozy 100%... I love the mom cozy ones ! The have temp sensor on bag... Medela. Due with my 3rd any day. Breastfed the other 2 for combined 3.5 years. Huge over supply with the first and tried so many. I won’t ever put my milk in anything else again.
r/ExclusivelyPumpingView thread →
User recounts losing milk due to Lansinoh bag leak
I’ve always used lansinoh but today I’m devastated. I was thawing a bag of milk and it leaked everywhere. I lost 6oz. It leaked from the bottom seam. I’m done with lansinoh.
r/ExclusivelyPumpingView thread →
Positive experience with Lansinoh convenience
I never thought I’d actually have a favorite breastmilk storage bag but here we are. Lansinoh has been my go-to. They freeze flat, never leaked for me, and I love the little label area. I pump directly into them sometimes and it's so handy.
r/ExclusivelyPumpingView thread →
Strong criticism of Lansinoh bags due to leaks
Lansinoh bags are the worst. I’ve had multiple leaks, and it’s always at the seams. I’ve lost so much milk. I’m switching to Medela.
r/breastfeedingView thread →
Request for storage bag recommendations
I’m looking for breast milk storage bag recommendations. I used Lansinoh with my first and had some leaks, so I’m curious what else is out there. I’ve heard good things about Medela and Kiinde.
r/breastfeedingView thread →
Complaints about inaccurate volume markings
Lansinoh bags not accurate. The measurements printed on the bag are way off. I measured 4oz in a bottle and the bag said 5oz. So annoying.
r/ExclusivelyPumpingView thread →