Quick Facts
Silicone flange inserts that reduce 24 to 28 mm flange tunnels to 10 to 21 mm for wearable pumps and collection cups.
Best for
Wearable pump and collection cup users
Key detail
silicone inserts
Size and fit
reduces 24-28mm tunnel to 10 to 21 mm
Consider if
Consider other sizes if your flange tunnel is outside 24-28mm
Shipping
Free US shipping over $100, 30-day returns
Find a Comfy Pump Fit Fast
Soft silicone inserts reduce 24 to 28mm flange tunnels to 10-21mm sizes for a better seal and more comfortable pumping sessions.
Find a Comfy Pump Fit Fast
Choose Your Exact Size
Choose Your Exact Size

Each insert reduces a 24 to 28mm flange tunnel to a specific diameter, from 10mm up to 21mm. Try a middle size first, then step up or down until you find the best seal and milk flow.

Works With Wearable Cups
Works With Wearable Cups

Designed to pair with most 24 to 28mm pump shields, these inserts make wearable pumps and collection cups fit more securely. They help prevent leaks and keep milk in the cup, not on your clothes.

Soft Silicone Comfort
Soft Silicone Comfort

Made of soft silicone that cushions and reduces friction against sensitive skin. The flexible insert forms a gentle seal while remaining easy to remove and clean between uses.

Multiple Sizes
Six diameter options let you fine tune the tunnel to match your nipple for comfort and flow.
Gentle Fit
Soft silicone reduces rubbing and improves comfort during pumping sessions.
Simple Setup
Push the insert into the flange tunnel, align, and start pumping, no special tools required.
Easy Care
Quick to wash with warm soapy water and air dry, ready for the next use.
How to Choose Flange Inserts

Choosing the right insert is about comfort, seal, and how milk flows for you.

  1. Measure the Tunnel: Confirm your pump or shield tunnel measures 24 to 28mm before selecting an insert.
  2. Start Middle: Try a middle size first, then move up or down to ease friction while keeping good milk transfer.
  3. Watch Milk Flow: If milk slows or you feel pain, switch sizes; proper fit should improve flow and reduce discomfort.
  4. Use With Wearables: These inserts are made for wearable cups and collection shields, helping prevent leaks and spills.
  5. Care & Replace: Clean after each use, inspect for wear, and replace inserts if they become stretched or damaged.
Frequently Asked Questions
What sizes do the inserts provide?

The inserts reduce a 24 to 28mm flange tunnel down to 10mm, 13mm, 15mm, 17mm, 19mm, or 21mm, giving you six size options.

Will these work with my wearable pump or collection cup?

They are designed to work with most 24 to 28mm pump shields and many wearable pumps and collection cups, but check your shield tunnel measurement to confirm compatibility.

How do I clean and care for the inserts?

Wash with warm soapy water, rinse well, and air dry. Follow your pump manufacturer’s cleaning guidance for shared components.

Will inserts change suction or milk flow?

A correctly sized insert can improve the seal and comfort, which often helps milk flow. If you notice reduced output or discomfort, try a different size.

What are your shipping and return policies?

We ship from a US warehouse, offer free US shipping on orders over $100, and accept returns within 30 days. If you need help, our human customer support team is available.

From the Moogco Baby Journal
A New Mom’s Guide to Breast Pumping Supplies
By Eda Ulger , Moogco Baby Editor and mom of two · Updated May 2026 So, you’re diving into the world of pumping! It can feel like you’re suddenly trying to learn a new language made up of flanges, valves, and...
Read the guide →
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"Did the job, kept me more comfortable the first couple weeks postpartum as breastfeeding was established. Next time I would go for the design that has perforated holes for airflow."

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"Had a cracked nipple, added some organic ointment and put this over it, healed in 2 days! Recommend it 100%"

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"These are great for nursing in the first few weeks when there’s soreness and breakdown. Would recommend!"

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"These were wonderful for me postpartum while learning to breastfeed. Highly recommend. They are easy to clean & very functional."

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"It saved my nipples multiple times. They’re super light. Quality is good, they do bend for no reason lol overall a good product."

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"These were great in the beginning helped me so much."

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