LacTeck Baby Motion Flanges 15mm – 27mm


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BabyMotion Flange transforms pumping into nursing by mimicking a baby’s suckling motions. It stimulates nipple and areola, increases pumping efficiency, is soft and comfortable. Compatible with all Medela, Lansinoh, and Hygia pumps. Please see FAQ section below for using with other pumps. Remember BabyMotion Flanges are heavier than a standard flange, please make sure to disconnect the flange first once done pumping to prevent bottle from tipping over and spilling precious breast milk.



★ MIMICS BABY’S SUCKLING MOTIONS – The BabyMotion Flange is developed based on biomechanics studies of nursing babies. Its unique compression window deflects during pumping and compresses the mother’s nipple and areola regions to mimic the baby’s tongue movement during nursing.

★ STIMULATE LETDOWN – The BabyMotion Flange gives pumping parents the sensation of nipple and areola compression, which stimulates the natural letdown reflux and helps increase pumping efficiency.

★ SOFT AND COMFORTABLE – The BabyMotion Flange is made of soft BPA-free material that is comfortable on a lactating breast, a very sensitive part of the body. It feels so much better than a hard plastic flange that just pulls on the nipple and leave pumping parents feeling like dairy cows. LacTeck strive to improve the pumping experience because they know what it feels like.

★ BETTER SEAL – The BabyMotion Flange creates a better seal around the breast because it’s soft and moves with slight breast deflection due to milk expression. It eliminates the need to adjust your flange in the middle of a pumping session.

★ PROTECTED PRIVACY – Throw the worry of getting walked in on out of the window. With semi-transparent design of the BabyMotion Flange, you can pump at ease because even if someone, either a family member or a co-worker, walks in, they won’t be able see your breasts. However, the compression window is still transparent enough to allow you to easily center the flange on your breast.

★ COMPATIBLE WITH ALL MAJOR PUMPS – Directly compatible with all Medela, Lansinoh, and Hygeia breast pumps. It can be used with Spectra Pumps by using an Pumpin Pal Spectra Adapter  or a Maymom MyFit Base connector. It can also be used with Baby Buddha pumps by using a Medela connector and a long-stem back-flow protector.



How to use the BabyMotion Flange?

The flange is used as any regular breast pump flange. However, because it’s soft, it will “absorb” some vacuum so you may need to turn your pump up a little bit. When using, please insert tightly into the connector to ensure a good seal.

Which breast pumps are the BabyMotion Flange compatible with?

The flange is directly compatible (no adapters needed) with Medela, Lansinoh, and Hygeia pumps.

To use with Spectra or Motif pumps, please refer to this Spectra and Motif Hack. To use with Willow pump, please refer to this Willow Hack. To use with Freemie cups, please refer to this Freemie Hack. To use with Spectra cups, please refer to this Spectra Cup Hack. You can also use it with Baby Buddha pump by using a Medela connector and a long-stem backflow protector.

How to use the BabyMotion Flange with Spectra pumps?

Please refer to this hack for ways of using BabyMotion Flanges with Spectra pumps.

What sizes of BabyMotion Flange are available?

We currently offer 15mm, 18mm, 21mm , 24mm, and 27mm. If you need other sizes, please feel free to tell us the size you need.

What size of BabyMotion Flange should I get?

Please note that the BabyMotion Flange has a different design than regular plastic flanges so sizing is not directly comparable. You can measure your nipple size first using this guide and add 1-3mm to your measurements before pumping (we suggest before pumping measurements especially if you have elastic nipples). If you have additional questions, please email

What is elastic nipples?

Elastic nipples is a situation where no matter what flange size you use, your nipple expands to fill the entire flange or extends too long that it hits the connector. If you have tried multiple sizes of flanges and still feel uncomfortable when pumping then it’s likely that you have elastic nipples. For more information, please click here.

What size should I choose if I have elastic nipples?

A recent survey showed that 28% of moms with elastic nipples needed to size down with BabyMotion Flange while 72% don’t (sample size: 623 moms). So it is possible that you are in either group as everyone is different.

Why is the BabyMotion Flange so heavy?

The flange is heavy because we have to ensure that the breast pump efficiency is not compromised when using a soft material like silicone. Because it’s heavy, please make sure to disconnect the flange first once done pumping to prevent bottle from tipping over and losing precious breast milk.

How to clean the BabyMotion Flange?

Before first time use, wash with warm soapy water and steam for 3 minutes to sterilize. Afterwards, simply wash with warm soapy water and air dry. It’s ok to sterilize with steam but we do not recommend frequent steaming as slight discoloration may occur. Please download the product instruction for more information.

Why does my BabyMotion Flange fall off the connector?

Most likely due to it not being inserted tightly. Please use a twisting motion to insert it all the way into the connector. Please refer to this instruction for more details on how.

It could also happen when there is residual milk/oil left on the flange or the connector. We recommend using warm soapy water to thoroughly wash both parts.

Can I place my BabyMotion Flange in the fridge between pumps?

No. We don’t recommend it because they will be cold and attract moisture once taken out of the fridge, making them slippery and hard to stay on the connector.

Can I use coconut oil or other lubricants with the BabyMotion Flange?

Yes, although we suggest washing the oil/lubricant off with warm soapy water thoroughly after each pump.

Additional information

Flange Size

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LacTeck Quantity

Single, Pair