---
product_id: 392877520
title: "21mm Silicone Flange Insert | Reduce 24mm Elastic Tunnel Down to 21mm | for Spectra, Momcozy S9 S10 S12, Willow go Flange Inserts, Medela, Freemie Breast Pump Inserts Shields, 2PC"
brand: "lozaeve"
price: "€ 0.38"
currency: EUR
in_stock: false
reviews_count: 1
url: https://www.desertcart.de/products/392877520-21mm-silicone-flange-insert-reduce-24mm-elastic-tunnel-down-to
store_origin: DE
region: Germany
---

# Optimizes milk expression efficiency Reduces 24mm tunnel to 21mm BPA-free durable silicone 21mm Silicone Flange Insert | Reduce 24mm Elastic Tunnel Down to 21mm | for Spectra, Momcozy S9 S10 S12, Willow go Flange Inserts, Medela, Freemie Breast Pump Inserts Shields, 2PC

**Brand:** lozaeve
**Price:** € 0.38
**Availability:** ❌ Out of Stock

## Summary

> 🍼 Pump Smarter, Not Harder — Perfect Fit, Maximum Flow!

## Quick Answers

- **What is this?** 21mm Silicone Flange Insert | Reduce 24mm Elastic Tunnel Down to 21mm | for Spectra, Momcozy S9 S10 S12, Willow go Flange Inserts, Medela, Freemie Breast Pump Inserts Shields, 2PC by lozaeve
- **How much does it cost?** € 0.38 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/392877520-21mm-silicone-flange-insert-reduce-24mm-elastic-tunnel-down-to)

## Best For

- lozaeve enthusiasts

## Why This Product

- Trusted lozaeve brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Handsfree Bra Friendly:** Maintains compatibility with most handsfree bras for discreet, on-the-go pumping.
- • **Universal Compatibility:** Works flawlessly with top brands like Spectra, Medela, Willow, Momcozy, and Freemie.
- • **Boost Your Pumping Power:** Enhances milk output by ensuring the perfect tunnel size, reducing irritation and trauma.
- • **Comfort Meets Durability:** Made from BPA-free, clear silicone that’s gentle on skin and built to last.
- • **Precision Fit for Small Nipples:** Seamlessly reduces 24mm breast shield tunnel to 21mm for maximum comfort and efficiency.

## Overview

The LOZAEVE 21mm Silicone Flange Insert is a BPA-free accessory designed to reduce the tunnel size of 24mm breast shields to 21mm, enhancing comfort and milk expression for mothers with smaller nipples. Compatible with major breast pump brands including Spectra, Medela, Willow, and Momcozy, it ensures a precise fit that maximizes pumping efficiency while preventing irritation. Its durable silicone construction supports handsfree bra use, making it an essential upgrade for any pumping routine.

## Description

This product has a variety of models, which can change the size of the "breast milk channel" on the cover of the breast pump, so as to be suitable for mothers with different sizes, help to improve the breast feeding efficiency and increase the pumping capacity, and make mothers more comfortable in the process of breast feeding.

## Features

- LOZAEVE 21mm inserts to compatible with Willow / Momcozy / TSRETE / Rainyb / NCVI / Bellababy MiniO, Pocket / Maymom / Spectra S1, S2 / Medela (PersonalFit Flex, Harmony, Freestyle, Swing Maxi, Sonata, and Symphony) 24mm breast shields. It will reduce the 24mm shield tunnel down to 21mm. Also compatible with some 25mm cups (Freemie).
- Seamless Compatibility For Optimal Milk Expression: Suitable for diameter 18-20mm(after a pumping session), or measure the circumference of base about 50.24 - 56.52mm before a pumping session.
- Great solution for small-nippled mothers using large breast shields, Proper tunnel fit is essential for comfort and efficient milk output.
- BPA free, made of silicone material. Durable, clear, and comfortable. This accessory helps breast shields for more effective pumping and maximized milk expression while helping to avoid trauma or irritation.
- Maintain compatibility with most handsfree bra. You can use most handsfree bra cups with they original 24/25mm detachable shields having this insert inside. During operation, you need to squeeze slightly to make the Insert fully fit with the shield to achieve the perfect effect.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Units | 2.00 Count |
| Brand | LOZAEVE |
| material_composition | BPA Free |

## Product Details

- **Brand:** LOZAEVE
- **Special features:** Lightweight, Portable
- **Material:** Silicone
- **Power source:** Manual
- **Material type free:** BPA Free

## Images

![21mm Silicone Flange Insert | Reduce 24mm Elastic Tunnel Down to 21mm | for Spectra, Momcozy S9 S10 S12, Willow go Flange Inserts, Medela, Freemie Breast Pump Inserts Shields, 2PC - Image 1](https://m.media-amazon.com/images/I/41zcjI4zzoL.jpg)
![21mm Silicone Flange Insert | Reduce 24mm Elastic Tunnel Down to 21mm | for Spectra, Momcozy S9 S10 S12, Willow go Flange Inserts, Medela, Freemie Breast Pump Inserts Shields, 2PC - Image 2](https://m.media-amazon.com/images/I/61L1dsWEAOL.jpg)
![21mm Silicone Flange Insert | Reduce 24mm Elastic Tunnel Down to 21mm | for Spectra, Momcozy S9 S10 S12, Willow go Flange Inserts, Medela, Freemie Breast Pump Inserts Shields, 2PC - Image 3](https://m.media-amazon.com/images/I/61KrZWEP4HL.jpg)
![21mm Silicone Flange Insert | Reduce 24mm Elastic Tunnel Down to 21mm | for Spectra, Momcozy S9 S10 S12, Willow go Flange Inserts, Medela, Freemie Breast Pump Inserts Shields, 2PC - Image 4](https://m.media-amazon.com/images/I/614bO03TduL.jpg)
![21mm Silicone Flange Insert | Reduce 24mm Elastic Tunnel Down to 21mm | for Spectra, Momcozy S9 S10 S12, Willow go Flange Inserts, Medela, Freemie Breast Pump Inserts Shields, 2PC - Image 5](https://m.media-amazon.com/images/I/61L61GsPOeL.jpg)

## Customer Reviews

### ⭐ 







  
  
    Caused more leakage
  

*by M***A on Reviewed in the United States on 16 March 2023*

I was hoping this would help, but it caused more leakage

## Frequently Bought Together

- LOZAEVE 21mm Silicone Flange Insert, Reduce 24mm Flange Tunnel Down to 21mm, Medela, for Spectra, Momcozy S9 S10 S12 Pro, Paruu P10 R12 P3, kmaier, TSRETE, MomMed, NaNaLazy, NIRGU, Onlyeah, MomWills
- Medela Manual breast pump with Flex Shields Harmony Single Hand for More Comfort and Expressing More Milk
- Lansinoh Breastmilk Storage Bags, 100 Count, Baby Essentials, Fast Freeze & Thaw Breast Milk Bags for Baby Bottle Feeding, Superior Strength & Stretch, 6 Ounce

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**Shop now:** [https://www.desertcart.de/products/392877520-21mm-silicone-flange-insert-reduce-24mm-elastic-tunnel-down-to](https://www.desertcart.de/products/392877520-21mm-silicone-flange-insert-reduce-24mm-elastic-tunnel-down-to)

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-02-19*