Price: $6.99 - $5.99
(as of Oct 14, 2025 06:20:58 UTC – Details)
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Product Dimensions : 9.06 x 4.92 x 0.39 inches; 1.8 ounces
Item model number : AS147
Date First Available : July 14, 2023
Manufacturer : Momcozy
ASIN : B0CBT9ZJ9T
Best Sellers Rank: #91 in Baby (See Top 100 in Baby) #1 in Electric Breast Pumps
Customer Reviews: 4.4 4.4 out of 5 stars 2,392 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Perfect Pumping Experience : The size of the flange is very important for comfortable and efficient pumping. Some moms experience nipple swelling or not draining well due to the unsuitable flange size. With this flange size measure for nipples, it is easy to choose the correct size and get the perfect pumping experience.
Best Choice for Pumping Moms : New mothers will be confused about how to choose the correct things related to the breast, such as breast pump and breastfeeding bra. Fortunately, this ruler could save Mom’s time and effort. Say goodbye to the unnecessary pain and stress brought by inappropriate pump with our accurate and helpful nipple ruler.
Easier Measuring Method : This nipple ruler has a great easy and simple way to get a good measure.One is to use the clear scales of the ruler edge and observe the size with our phone or mirror. One is to place the nipple in the maximum circle that can comfortably fit. The 21 measuring holes from 10mm to 30mm which is easy to measure and read.
2m Extended Soft Ruler : Momcozy provides a 2m soft ruler which can help you clearly know the body changes during the nursing journey and support body management during postpartum recovery. Besides, this ruler also helps mothers in measuring the baby’s height and healthy growth. It is great to have such a handy tool for many home measurements.
Soft and Bendable : Momcozy nipple ruler is made of food-grade silicone, safe and soft, reliable and bendable. Much better than hard plastic or paper with sharp edges, the ruler is friendly to tender skin, offering the best comfort.
13 reviews for Momcozy Nipple Ruler for Flange Sizing, Soft & Flexible Silicone Measurement Tool for Breast Pump Sizing, Compatible with Momcozy, Medela, Spectra, Lansinoh, Easy to Use for Comfortable Pumping
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$5.99







MrsSchmidt –
Essential Tool for Comfortable and Efficient Pumping
A must-have tool for pumping moms! This product makes it incredibly easy to find the right flange size for your breast pump, ensuring a more comfortable and efficient pumping experience. The measurements are accurate and straightforward, eliminating all the guesswork that often comes with figuring out the correct fit. Using the wrong flange size can reduce milk output and cause unnecessary discomfort, but this tool solves that problem effortlessly. I highly recommend it to any mom who wants to maximize the effectiveness of their pump and make the entire process smoother. It’s a simple yet essential tool that every breastfeeding mom should consider!
Nikita Shelar –
Must Buy !!
Loved it.Very convenient and powerfull at the same time.I have been using this outdoor for over 3 months now and I must say it makes pumping during travel wlvery much easy.Its high quality and the mixed functions give u full power and stimulates milk flow for full pumping.
olivia scholz –
Amazing customer service
I love this pump! Mainly because it’s hands free/ worry free. I am a 34G and did not think these would work for me but they absolutely do. MomCozy is a wonderful company! Three-ish months after I started using the M5 pump, one of them stopped working properly. MomCozy customer service sent me a replacement very quickly and they did not hassle me. I am so relieved and so happy to keep using this pump.
Amy C. –
Great product and customer service
These have been a life saver for a busy mom to toddlers with a new baby in the NICU… allows me to do life and take care of my little one’s needs for fresh breastmilk too.The customer service team also was super helpful when one broke with a mechanical issue, perhaps caused by usage, responded quickly and sending a replacement in the mail. Helped me not stress out to have such a quick and ready to help response within hours!
Jessica E. –
Invest in your pumps!! It’s worth it!!
I am a HUGE fan of my momcozy M5s. But when the parts start to wear out due to usage, you can just tell the suction isn’t as great, and you don’t get as good of a pump. It is recommended to change your pump parts every 3 months (I like to do so every 6). Purchased these to replace my old parts and my pumps are working as good as new!! All I had to do was put in the adjusted flange sizes from my old ones and everything else came new (the collector cup, outer cap, small pump piece and suction cap) Momcozy is such a great brand, even though it’s a little pricey. You pay for what you get and as a mom of two- I can honestly say I swear by mom cozy products.
Amazon Customer –
Works great!
Best one so far. Lots of suction. Different nipple size attachments.
Courtney –
Loved this!
Cannot say enough how much this pump made things better for me. Pumping was so much better and I didn’t get tied to one spot. Very convenient and easy to use and wear. Highly recommend along with other momcozy nursing products!
Estevan –
Must-have for any exclusively pumping mama
I had been on the fence for a long time about getting a wearable, but I’m so glad I pulled the trigger on the M5! It’s SO CONVENIENT to be able to pump on the go and way easier to take care of baby not being hooked up to my Spectra. My supply hasn’t dipped at all, it’s actually gone up because I’m sticking to my schedule so much better with these!My only complaints are that it will absolutely leak all over you if it’s not assembled perfectly correctly (so pay close attention) and it’s not as quiet as I’d hoped…. But you can’t beat the convenience and the price point.
sarah –
Comes with one, so order two. Wish my momcozy just came with this size..I wasn’t stoked that I had to order these separate but they do the job!
Tony –
Modelo correcto, sin problemas al usarlo con el extractor
Gabriela –
I received a product that was clearly used. in a dirty bag inside that was not the original. I know momcozy products and this is not the presentation they come with
Mora –
La atención del vendedor fue excelente
Sarah Fdca –
Me encanta el sacaleches y la brida funcionaba perfectamente pero es la segunda que compro (27 mm) que al momento de esterilizar (con todo el cuidado) se abomba el plástico 😤 y deja de funcionar porque en la primera ocasión la puse en una extracción y dañó el motor porque ya no sellaba correctamente. No me ha pasado con las bridas originales del sacaleches (24 mm)