



We offer free standard shipping to every province and territory in United Kingdom.
We offer free standard shipping to every province and territory in United Kingdom. No minimum purchase is required, and all orders include tracking for your convenience.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Deliveries to United Kingdom’s outer and remote regions may experience seasonal delays caused by severe weather or limited carrier availability. We appreciate your patience and recommend allowing additional time for your order to arrive safely.
Experience a more tailored pumping setup with Mompmuir 20mm silicone flange inserts, designed to work across a wide range of popular pump brands. Instead of sticking with a single shield size, these inserts offer a flexible path to a better fit by narrowing the nipple tunnel from 24-25mm down to 20mm. This can feel more comfortable for many users and may align better with individual pump configurations, helping you maintain a steady pumping rhythm without changing your existing hardware.
Constructed from soft silicone, the inserts gently conform to contours around the nipple base, creating a comfortable contact surface that supports your pumping routine. They are designed to respect the original pump’s suction feel while offering a refined fit. The product ships as a practical two-piece set, giving you options to rotate inserts between sessions and experiment with fit without committing to a single size.
The design is built with two key improvements in mind. First, a two level taper guides milk flow while reducing the risk of flow bottlenecks. Second, the inserts do not alter the suction pressure of the pump, preserving the overall pumping experience you expect from your device. Materials are BPA and DEHP free, and the inserts are described as safe for boiling, steaming, and top rack dishwasher cleaning. The emphasis is on compatible, easy care parts that complement your existing kit rather than replacing it.
While these inserts are designed to support a more customized fit and user comfort, they are presented as a flexible option to pair with your current pump parts. Real-world results depend on individual fit, usage, and pump compatibility.
Q: Is this 20mm insert compatible with my pump brand and model?
A: Mompmuir 20mm inserts are designed for broad compatibility, including Elvie Stride, Lansinoh, Spectra, Medela, and more.
Q: What exactly is included and how do I use it?
A: Each pack contains 2 pieces. Insert into your 24-25mm shield to reach about 20mm; easy to install, boil, steam, or top-rack dishwasher safe.
Shipping (UK)
Returns & Refunds
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