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21 mm Inserts

Rated 5.0 out of 5
Based on 24 reviews

Regular price $ 12.99 Sale

Set of 2 - For Silicone Collection Cups

21 mm Legendairy Milk Inserts are exclusively designed to fit right inside your Silicone Collection Cups

ALL SALES FINAL. BREAST PUMP AND KIT NOT INCLUDED.

Compatibility: 21 mm Legendairy Milk Inserts are only compatible with Silicone Collection Cups. They are NOT compatible with traditional plastic breast shields aka flanges because the silicone is very thin and pliable and may collapse too much around the nipple. Check out our 19 mm inserts for a better option for reducing the diameter of a 24 mm hard plastic breast shield.

Includes: Pack of two (2) 21mm Legendairy Milk Inserts

Caring and Cleaning Guidelines:

  • Sterilize before first use by submerging the inserts in a deep and wide pot of boiling water for 3-5 minutes. The inserts should be fully submerged in water and not touch the bottom or sides of the pot. Do not sterilize and avoid using high heat after initial sterilization.
  • Hand wash in warm soapy water then rinse clean after subsequent uses. Using cold sterilization or UV sterilization is also permissible.
  • Do not wash inserts in the dishwasher. 
  • Replace every 3 weeks, depending on the frequency of use.

Warning! Choking Hazard - keep away from infants and small children. Replace parts right away if they become torn or damaged.

Key Benefits

  • Reduce the diameter of your breast shield for better output
  • Obtain an optimal breast shield fit
  • Minimize pain and discomfort caused by an improper breast shield size
  • Make a better seal
This product is
average rating 5.0 out of 5
Based on 24 reviews
  • 5 Stars
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24 Reviews
Reviewed by Mariana T.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

They can be modified to work with Elvie Stride flanges

I absolutely love these flanges. I used them on my spectra and willow flanges. I just bought the elvie stride and I cut these very slightly so they wouldn’t cover the hole that collects milk. It has made pumping a lot more comfortable with the stride.

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Reviewed by Mariana T.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

I use them with regular flanges as well

They are perfect fits for the silicone cups and makes it super comfortable. But these inserts can also be used in flanges as well! They don’t fit in the 24mm but they do fit in the 28mm. They are a little too small for the 28 but they make pumping with regular flanges extremely comfortable. I do see an increase in output as well!

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Reviewed by Cat
Verified Reviewer
I recommend this product
Rated 5 out of 5
Review posted

No More Discomfort!

I am an exclusive pumping mama, and I originally purchased these for my silicone cups, but at night I use my spectra plastic flanges while my cups dry for the next day. Curiosity struck and I wanted to try these insert in my plastic flanges, WHAT A GAME CHANGER!

I put them inside a 24 mm flange, and they fit perfect. They are flush to the rim of the flange, do not move around, and provide optimal comfort while pumping on those terrible plastic flanges. I don’t pump without these now - I will never go back.

Also, if you have elastic tissue, these work wonders in preventing your nipples from hitting the end of the flange!

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Reviewed by Jasmine C.
Verified Reviewer
I recommend this product
Rated 5 out of 5
Review posted

Incredible

As someone with elastic nipples who always used the wrong sized flange and whose nipples had become raw in the beginning of pumping, these made everything better! Using them with the cups is just so convenient and easy! But I just figured out I can fit the inserts into my regular plastic flanges! Making pumping even more comfortable when I don’t have my hands free cups with me!

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Reviewed by Chelsea P.
Verified Reviewer
I recommend this product
Rated 5 out of 5
Review posted

21 mm Inserts

I purchased these with the silicone collection cups and they have made pumping so much more comfortable! I have been primarily breastfeeding while on maternity leave, but has been trying to pump a couple times a week to get used to it and make sure my baby would take a bottle. I’m going back to work in a few weeks so I have been ramping up my pumping sessions, and I hated how hard the flanges were that came with my spectra pump. I tried these inserts with those flanges just to see if it helped, and it totally did! They fit the flanges perfectly and made them so much more comfortable. I feel like I got better output too!

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