NUK Simply Natural Seal n’ Go Breast Milk Bags
$14.99
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Price: $32.99 - $14.99
(as of Oct 20, 2025 12:16:45 UTC – Details)
The NUK Breast Milk Storage Bags are very useful for lactating mothers. These self-standing milk storage bags are freezer safe so that you can save milk for your baby to be fed when you are not around. They come in an innovative design and a leak-proof double zipper seal that make the process much more efficient. The baby milk storage bags come available in 25-count, 50-count and 100-count packs, and they easily fit most disposable bottle holders. The bags can go into the freezer standing up, and the volume markings on the front allow you to see how much is in each bag. They thaw easily, making meal time quick and easy. These freezer storage bags also feature a space to write the date on the bag so that you know how old the milk is.
100% leak-proof double zipper seal for extra security
Rounded bottom helps prevent leaks from corners of bag
No-mess pour spout helps prevents spills during transfer
Pre-sterilized and tamper-evident top plus improved oxygen barrier to ensure freshness
BPA-free; Freezer-safe; Do not microwave
Chrissy –
Awesome and cheap bags
These bags are really good. I normally use Lansinoh bags, which are pretty decent and also happen to be the only ones I can usually find. I decided to give these bags a try back while my daughter was still in the NICU. So I just now got around to thawing them. I have not had a single on out of 50 leak on me. Not one. Now compare that to the Lansinoh brand which if you are not careful puncture/scrape easily. I have had about 5 of every 100 Lansinoh bags leak on me. You can be less careful with these bags and they still don’t develop tears and punctures. Sure they don’t lay nearly as flat as the lansinoh, nor do they hold as much. But since I use roughly 6 bags/day and these are cheaper I will be going with these. They still freeze fairly flat and like I said much sturdier.Update. I have used about 400 bags by this point and can say that these are the best bags I have ever used. I have had all of 2 leak on me and they had gotten scraped so it really was a user error. The plastic is extremely sturdy and as long as I make sure no milk gets caught in between the seal and freezes and expands I never have problems. It is a bit annoying to have to use sharpie since pens do not work and trust me I have tried quite a few different ones, but with a fine point sharpie it’s just a very minor nuisance. I have even packed these very tightly together and shoved them against each other and they still didn’t puncture, leak or rip. These are the only brand I will use even if they weren’t the cheapest.
SoCalPrincess –
Helped me save 2500 OZ with ZERO leaks!
I pumped during EVERY nursing session for 5 months straight, in an effort to bank as much milk as possible for my second baby. In that time, I froze and stashed 2500 ounces of breastmilk. With my firstborn I used a variety of different bags, but was having problems with leaking, so I eventually settled on these. So with my new baby, I already knew that these bags would be my go-to for what I was about to attempt. I have used the Nuk bags exclusively the entire time, and went through about 640 bags to get to 2500 ounces when I stopped, and we have had NOT ONE LEAK.I can’t really speak for the measurements on the bag because I didn’t really use them… since the weight of breastmilk itself can vary depending on a number of factors like how much water you drank or fat you consumed that day. I weighed my pumped milk with a small digital kitchen scale and used those weights for my ounce measurements.I never once spilled milk while pouring it into the bag for storage…I held the bag in one hand with the top lip/spout folded down and out of the way, and poured the milk in from the pump bottle with the other hand. Zipped it up and laid it flat for freezing to optimize storage space. Done, zero issues.The most I ever stored in one bag was about 6 ounces, but the majority of my frozen bags held 5 ounces exactly because I estimated that was how much my baby would be eating in one sitting by the time he was 6 months. It also made the most efficient use of the capacity of the bags without pushing their capacity limits, and I could fit 11 five ounce bags snugly into a gallon size freezer ziplock bag (I call them milk bricks), for optimized freezer storage space. By the time I was done I had saved about 48 milk bricks in my freezers.My son is now exclusively drinking my frozen breastmilk, so we have already thawed about 150 of the bags. We place the frozen bag in a bowl of warm water for a few minutes to allow it to thaw and warm, and then pour from the bag into his bottle. The flap/spout at the top of the bag allows us to pour without spilling one drop. Again. Zero leaks during the thawing process.Honestly, these bags were perfect… we definitely put them to the test and they held up beautifully. They were one of the most affordable options available that from my experience ensured the quality I was looking for, and when you’re saving your precious liquid gold that you worked SO HARD to make, you want the most reliable option you can find!100% recommend!
Modest Mama –
No leaks so far!
I have to admit I was skeptical about these bags but bought them anyway. So far I have used three bags and have had no leaks. I always place the bag in a large tupperware container and then fill the bag with milk to avoid losing any precious liquid gold should the bags have any holes. Then, I seal the bag, lay it flat and leave it in the tupperware container to freeze. Also, I am able to write the date on the top part of the bag using a regular pen and not a sharpie. So far I am happy with these bags.UPDATE:These bags rock! Not a single bag leaked! I would pump and fill an entire Ameda bottle and then pour the milk into the bag to freeze. I thought a full Ameda bottle would be close to 6oz (it only shows lines for 4oz) and when I dumped the milk into the bags the milk went above the 6oz mark and froze just fine. I have yet to thaw any milk but I will put all bags into a glass measuring cup so if there is an issue the milk will thaw into the cup.Also, I purchased the Honey Suckle bags (ok bags) and the Lansinoh bags (not a fan of these bags!). These Gerber bags are far better than both. The Gerber bags are much thicker and sturdier. The ziploc on the Gerber bags is thick, and easy to connect and to seal. The only negative for me is that the area to label the bag is clear where the Honey Suckle bags and the Lansinoh bags have a white area for labeling. The only reason I don’t like the clear background for labeling is that I have a black counter top and it is hard to see if the ink pen wrote on the bag or not. A very minor issue. Buy these bags and you won’t be disappointed!!
Jaz Unco –
Encontré estas bolsas a un excelente precio, aún las tengo. Lo único que no me agrado tanto es que el lugar donde se etiqueta no tiene fondo blanco entonces no queda muy visible la etiqueta. Pero cumple su función perfecto, incluso trae doble cierre (lo que otras marcas no a pesar de ser más caras)
Gabriela –
These are my first breastmilk bags so i don’t have others to compare them to. They do the job. One thing that bothers me about them is that they are a bit difficult to open and keep open when you are pouring the milk in.
beanbagclub –
A little hard to write on this plastic bags. They’re similar in capacity and shape but Lansinoh is still the best!!
JDe –
I’ve been using these bags for about 8 months with zero issues. The plastic feels thick, I love that they stand up, and the double seal is great. I’ve never had milk leak, explode, or a seam give way. For mamas who don’t produce a lot, milk is precious and I fully trust these bags to keep every ounce safe.
rathna kumari u –
Good