Silicone Breast Milk Storage Bottles
One bottle. Three jobs. No drop wasted.
Pump into it. Store in it. Feed from it — no transferring, no extra containers, no plastic touching your milk at any step. One bottle replaces three.
Soft, squeezable, and completely plastic-free — these are the world's first 100% silicone 3-in-1 breast milk bottles designed to do it all. Named Parents' Best Breastfeeding Accessory of 2026, and it's easy to see why.
The Three Jobs — Done.
- 🍼 Pump — attaches directly to most leading pump brands (Spectra, Medela, Baby Buddha, and more - See Compatibility for full list). No adapters, no extra parts.
- ❄️ Store — freezer-safe, fridge-safe, and fits inside the MilKeeper® cooler to keep milk cold for up to 20 hours on the go.
- 👶 Feed — attach a nipple and feed directly. Your baby never touches a plastic bottle.
Why Mamas (and Daycares) Love Them
- Daycare-approved - virtually unbreakable - soft silicone won't shatter if dropped; daycares love them.
- Compatible with Spectra, Medela and more - no adapters needed.
- 100% LFGB-certified silicone — Europe's strictest food-contact safety standard, exceeding US FDA requirements. No fillers, no microplastics, no leaching. Ever.
- Less to clean, less to manage — one bottle instead of three means fewer parts, fewer steps, fewer headaches
- Easy to label with a chalk or dry-erase marker for easy date tracking
- Semi-transparent — monitor milk levels at a glance
- Easy to clean — dishwasher and UV sanitizer safe
- Reusable beyond milk — perfect for storing infant solids as baby grows
- HSA/FSA eligible
6 oz | 180 ml | Available in Standard and Wide Neck
Backed by our Lifetime Quality Guarantee — purchase with total peace of mind.
Mila's Keeper Silicone Breast Milk Storage Bottles are made of 100% LFGB Platinum-Grade silicone. This requires the strictest testing by a third party CPSC-approved lab, meeting EU standards, which exceeds the US FDA food-grade standards.
Silicone is an organic based polymer, which is non-toxic and unlike plastic it is very durable, easy to clean and odorless. It is soft, silky and will not stain when washed after each use. Note: Silicone is NOT plastic as it is not made from petroleum.
Mila's Keeper prides itself in using the highest quality materials and full transparency. All components of our products have been tested and exceed all US FDA and CPSC tests for lead, cadmium, Bisphenol A, and phthalates. Please feel free to see our third party laboratory tests here.
Mila's Keeper Silicone Breast Milk Storage Bottles come in two (2) sizes, standard and wide neck, to accommodate different size pumps and nipples. Make sure you know which neck size is the right storage bottle for you.
* Please note Medela PersonalFit Connectors on the Sonata or Pump-in-Style do not fit reliably. If they do not, use other Medela pump connector.
**Please always test nipples for leaks before use. Pigeon and Lansinoh nipples can fit into Avent collars or similar generic collars for use with our wide necks.
The wide mouth of this size also accommodates milk poured from wearable, hands-free breast pumps such as Freemie, MomCozy, Elvie, and Babyation.
Volume: 6 ounces | 180 ml
Weight: Standard: 3.2 oz; Wide: 3.7 oz
Dimensions: Approximately 2.5 inch (63mm) x 4 inch height (105 mm).
Fits conveniently inside the MilKeeper!
Care & Use Instructions
Mila's Keeper Silicone Storage Bottles can be used to directly pump breast milk into using most leading brands of breast pumps, to store breast milk, and to feed.*
In order to secure the leak proof patent-pending silicone lid, there are two ways to use:
1. Push the lid firmly down to the bottom of the mouth of the bottle and twist to tighten, ensuring there is no gap between lid and bottle.
OR the easiest way
2. Simply peel back the lid to open, and push firmly down making sure there is no gap between lid and bottle. See video here.
*Please note that when you first receive the bottle in its package, the lid might be vacuum sealed making it harder to peel open. Just know that once it is opened the first time, the vacuum will be released and it will be easier to use thereafter.
Use in Freezer & Bottle Warmer
Medical grade silicone is the purest form of silicone which contains no fillers, this means it handles even better under extreme conditions such as the freezer and even boiling water without fear of any leaching chemicals or microplastics which occurs when plastic is heated.
We would like to caution that when doing so, especially boiling, the silicone bottle will be extremely hot and you must use protective gloves to handle the hot glass.
Caring for your bottle:
Be sure to always clean your bottles before first use.
Dishwasher Safe
Yes silicone is fully safe in the dishwasher! We would also encourage a thorough rinse to remove residue beforehand especially in harder to reach places, such as the shoulders of the bottle.
Sanitize
Our bottles may be sanitized in multiple ways - by boiling water, the microwave or by UV sanitizer. If you find that you have any stubborn smells, you can also safely place in the oven or an airfryer for 5 minutes even to eliminate all odors!
HSA/FSA Cards Accepted
Yes, that's right. All of our products are eligible as breastfeeding supplies from most insurances. Therefore use your HSA/FSA cards conveniently to pay right on our website!
HSA/FSA Cards Accepted
Yes, that's right. All of our products are eligible as breastfeeding supplies from most insurances. Therefore use your HSA/FSA cards conveniently to pay right on our website!
Warranty & Returns
As a parent, you have more than enough on your plate, so we want you to be 100% worry-free and confident buying Mila’s Keeper® products. Therefore, Mila’s Keeper® provides a one year warranty from original date of purchase for all Mila’s Keeper® products to be free from defects in materials or workmanship purchased directly through milaskeeper.com.
Mila’s Keeper® will replace any product found to be defective within the scope of normal household and appropriate use, in accordance with, but not exclusively, the Care and Use Instructions.
Also, If you are not happy with our product, we aim to do everything we can to make it right.
You can return your unopened and undamaged order within 60 days of purchase date for a full product-refund. Shipping charges cannot be refunded. Returned items must be in new and unused condition with original packaging. If you wish to return your order, please contact us at customerlove@milaskeeper.com with your printed receipt.
For more detailed information, visit our Return Policy here.
Warranty & Returns
As a parent, you have more than enough on your plate, so we want you to be 100% worry-free and confident buying Mila’s Keeper® products. Therefore, Mila’s Keeper® provides a one year warranty from original date of purchase for all Mila’s Keeper® products to be free from defects in materials or workmanship purchased directly through milaskeeper.com.
Mila’s Keeper® will replace any product found to be defective within the scope of normal household and appropriate use, in accordance with, but not exclusively, the Care and Use Instructions.
Also, If you are not happy with our product, we aim to do everything we can to make it right.
You can return your unopened and undamaged order within 60 days of purchase date for a full product-refund. Shipping charges cannot be refunded. Returned items must be in new and unused condition with original packaging. If you wish to return your order, please contact us at customerlove@milaskeeper.com with your printed receipt.
For more detailed information, visit our Return Policy here.
Questions
Need assistance? Check out our FAQ's first and if your question isn't answered, we'd love to help! Email us at customerlove@milaskeeper.com
Questions
Need assistance? Check out our FAQ's first and if your question isn't answered, we'd love to help! Email us at customerlove@milaskeeper.com
Complete the SET
Not Just for Milk!
Our glass storage bottles and silicone breast milk storage is perfect beyond breastfeeding because toddlers begin solids at 6 months, and our portable insulated coolers will transport foods on the go just as well as milk!
Just received these bottles and the quality is great. They fit perfectly with my spectra flanges and are much lighter than glass options. It's really nice to have a silicone bottle option. Highly recommend!
Hi Amanda, thank you so much for your wonderful review! We're thrilled to hear you're happy with the silicone bottles and that they fit well with your spectra flanges. Your recommendation means a lot to us. Enjoy using them!
Love these silicon bottles! I use them for pumping and it’s so nice to have a non plastic light weight easy option! Great for storage and can put a nipple on them!
Hi Kia! We're so glad you love our silicone bottles. It's wonderful to hear they're making your storage easier and lighter. Thanks for taking the time to share your experience!
I was looking for non-plastic bottle options to pump with my Spectra. Glass bottles are quite heavy but these wide mouth silicone bottles are absolutely perfect. They are lightweight for pumping and I also use them to store pumped milk in the fridge. I have 6 and truly wish I had more!!
Hi Marissa, we're thrilled to hear you love the silicone bottles! Thanks for sharing your positive experience and happy pumping! You can also use them later for infant solids to snack food! So if you need more, we're here to help. :-)
These have been great- super useful to be able to freeze and thaw.
Hi Talia! We're so glad to hear you have been using these to freeze too! Thank you for sharing your experience!
I love that I’m able to use my babies own bottle nipples with the silicone! My daughter can’t have glass bottles at her daycare so this allows her to have a different option to avoid plastic.
Hi Kelsey, we're so glad you love the versatility of our silicone bottles especially for daycare! We built a second option from our popular glass bottles just for this reason! Thanks again for sharing!
I *searched* for breast milk storage when preparing to return to work. These are
a bit pricey but the reviews are true & they’re worth every penny knowing my LO’s food is being stored plastic-free AND that none of my precious pumped milk is going to end up in the cooler! Perfectly compatible with Pumpables Liquid Kits and the Momi nipples!
Customer service is also A++
Thank you so much for your kind review! :-)
Love the bottles they are great for pumping with my Spectra pump and storing milk.
So glad they work with your pumps and that you can avoid plastic at the same time! :-)
I love that these are plastic free! Fits perfectly with my spectra s1
The silicone bottle set is great! Convenient and easy for the babe to hold. My only difficulty is finding the right nipple collar
Thank you Mary! We've reached out to see if we can help you with the nipple collar! There are many options! :-)
Pros:
- very sturdy and secure when placed in a table
- I trust that it is leak proof
- love that it can work with the spectra pump and pigeon bottle tops
Cons:
- very difficult to read the volume measurement lines
- slightly heavy when attached to pump
- difficult to label date (we like to stick painters tape on the cap/ but it doesn’t stay on the silicone)
Thanks so much for again Amy for your review! I am glad we were able to share that you can label the silicone or glass bottles with a ballpoint pen! We will do a better job at making that clear! And we will continue to be in touch with you on your other points! :-)
I had to buy smaller flanges for my spectra and they wouldn’t stay screwed on to the plastic bottles (which I already didn’t like because plastic is nasty)! I love these bottles, they stay screwed on REALLY well, and keep my sacred milk from sitting in plastic. I love that it comes with 3 so I can keep one rotating out in the fridge.
Thank you, Mila's Keeper, for making these silicone breast milk storage bottles. I am a working mom, so when maternity leave ended, I needed to ensure my baby could take a bottle. We spent weeks, including visits with a lactation consultant and a baby physical therapist to finally get our baby to take a bottle, and only Lansinoh would do. Unfortunately, my daycare does not accept glass bottles, so I have been stuck using plastic bottles--worrying constantly about microplastics. Yours is the ONLY product that is silicone; works for pumping, storage, and feeding; and is compatible with a Lansinoh nipple! Which means not only can I rest easy that my baby isn't drinking microplastics, but I can also avoid milk loss from transferring milk from a pumping container to a bottle. Thank you so so much!
Love this Caitlin! Yes, they are 100% daycare friendly! We are so happy you found us and that they work with Lansinoh too! We need to add that! :-)
these little bottles do it all AND do not contaminate milk with micro plastics. 12/10
Thank you so much for your kind review!
Overall, I really like these. The silicone is thick and sturdy. This is a small thing, but I like that “Mila’s Keeper” is more subtle than on the glass storage. The lids fit well, but are a little difficult to get off since the containers are slightly squishy. It’s annoying to me, but still glad to have an alternative to plastic.
Thank you so much for your review! :-)
Great alternative to plastic. Durable, lightweight (lighter than glass, heavier than plastic), and I love that I can pump right into these and then feed my baby from the same bottle. The less transfer of milk the better. Would recommend!
Love when our bottles are used exactly as it was intended! Thanks so much for your review! :-)
I have been using MK for a month now, and it is perfect. I purchased everything (bottle/scilicone bottles/extra freezer capsules). Pumping at work was something I was dreading, but MK has made this transition seamless and cute. The wide neck bottles fit my pump perfectly so I have cut down on equipment and cleaning time. I am able to store BM at my desk and not have to use our public staff fridge. Plus, everything is so visually pleasing that I feel cute on top of productive. I 100% recommend all of their products. I am going to order another storage unit so I can store food and additional travel milk for when we have a longer day away from the home for later use. My husband also loves the system and is impressed with the thoughtfulness of this product.
Thank you so much for sharing! We especially love that we have cut down on your cleaning time! That's the best!
For my second baby, I was looking for an alternative to the plastic Spectra bottles that were still light enough for hands free pumping. These have been perfect. Bonus—the Spectra nipple rings fit so I can use them as bottles too. Wish these had existed when my oldest was breastfeeding!
Yes! You're using it for all 3 pumping, storing and feeding!! 🙌 Grateful that we can be a part of this BF journey with you! ❤️
This is my third set of these bottles. Pump into them to be plastic free and theyre amazing. Easy to clean too
My favorite milk storage containers I’ve ever bought! The wide neck fits perfectly with my pink spectra. Really glad I found Mila’s Keeper!
I love them but it drives me crazy they are not sold as sets of 2 or 4. This basically forces you to buy 2 packets of 3 since that's the only way to get complete pairs for pumping. I don't think very many people are only pumping on one side so this feels like an underhanded marketing trick, especially given what they are charging. My other pet peeve is how difficult it is to see the number markings.
Thank you for your feedback. We’re sorry it came across as a marketing ploy - that was never our intention. Every decision we make is truly with moms in mind. The third bottle was actually included to offer extra support: two for pumping and one for storage/feeding. We appreciate you sharing your perspective and will absolutely take it to heart as we continue to improve.
Updated Jan 2026 - We now have sets of 2 thanks to your feedback and others. We hope that this makes purchasing in sets of two make it easier for you and others!
I’m a pediatric nurse who was looking for an alternative to plastic to pump into/store my milk when I’m in shift. The silicone wide neck bottles fit my spectra perfectly! I can’t wait to order the narrow neck ones for my Medela!
So excited to get this feedback from an expert! We can't wait for you to try our standard necks too! :)
Fits well with my pump, I really like them!
Obsessed! Easy to clean and sterilize, light weight for pumping with. The top screw cap seal is excellent as well.
I love the option of a FULL silicone bottle (lid included). No plastic. And they really are leak proof! These are awesome.
Repeat purchase because I love these so much!! So well made and sturdy too
Yay we'll always welcome you back! :-) Thanks for your review!
Komm in unser Mama-Dorf!
Es braucht ein ganzes Dorf – besonders, wenn es ums Stillen geht! Melden Sie sich an, um Tipps für Mütter, hilfreiche Ressourcen und vieles mehr zu erhalten!
