Nipple Sizing with Lacteck Baby Motion Flanges 

Dec 3, 2020 | Flange Sizing, Lacteck, Nipple Queen Ruler | 4 comments

Lacteck Baby Motion flanges stand out from standard hard plastic flanges due to their unique composition and design. Crafted from a soft silicone-based material, these flanges offer a gentle and comfortable pumping experience, in contrast to the rigidity of traditional hard plastic. The soft silicone gently compresses the nipple during pumping, providing a more pleasant sensation for breast pumping moms.

Moreover, Lacteck flanges come in various sizes, including 27mm, 24mm, 21mm, 18mm, 15mm, and 13mm. However, it’s important to note that feedback suggests they may run approximately 2mm larger than advertised. You can see how they may fit you in terms of sizing:

  • 27s they fit like a 28/29mm,
  • 24mm fit like a 25/26mm,
  • 21mm fits like a 22/23mm,
  • 18mm fit like 19/20mm,
  • 15mm fit like 16/17mm, and
  • Reports suggest the fit is exact for 13mm.

Be aware that if you do get Lacteck Baby Motion Flanges you will need base connectors to work with pumps like Spectra, BabyBuddha, BellaBaby, ect… They require two-piece connectors like the ones found on Medela and Lansinoh pumps. 

When selecting your flange size, this helpful tip will guide you with using Lacteck Baby Motion Flanges. Unsure of your flange size? Use the Nipple Queen Ruler to eliminate guesswork and determine the exact flange size you need. Regardless of the flange band you use! The ruler’s number indicates the size to purchase! use code SAVETHEMILK for 10% off 

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  1. Amanda

    I found this article after ordering these flanges. They are really comfortable but after reading this wondering if I should have sized down? I was recommended a flange size 21mm which of these should I g by be using the 18mm or 21mm. I pump exclusively with the Elvie.

    • Crystal Nelson

      If you find that the size you are using is comfortable and allows you to empty, then there is no reason to change sizes.

  2. Raychel

    Is the generation 3 still large? I was recommended size 18 but wonder if I need to side down. I see your post is from 2020 so didn’t know if they have updated their flange sizing

    • Crystal Nelson

      They are still a little big. I have been seeing moms post that the new sizes start out the right size but tend to get a bit large when washing. I still think they are a great option!


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