---
product_id: 588961156
title: "Flange Insert 13/15/17/19/21mm 10PCS Compatible with Momcozy S12 Pro/S9 Pro/S12/S9/Medela/Spectra etc Wearable Breast Pump 24mm Flange/Shield, Reduce 24mm Tunnel Down to Correct Size"
brand: "lotbill"
price: "R267"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Lotbill"
url: https://www.desertcart.co.za/products/588961156-flange-insert-13-15-17-19-21mm-10pcs-compatible-momcozy
store_origin: ZA
region: South Africa
---

# 5 precise flange sizes (13-21mm) BPA-free food-grade silicone Dishwasher safe & easy sterilization Flange Insert 13/15/17/19/21mm 10PCS Compatible with Momcozy S12 Pro/S9 Pro/S12/S9/Medela/Spectra etc Wearable Breast Pump 24mm Flange/Shield, Reduce 24mm Tunnel Down to Correct Size

**Brand:** lotbill
**Price:** R267
**Availability:** ✅ In Stock

## Summary

> 🍼 Perfect fit, painless pumping — because every drop counts!

## Quick Answers

- **What is this?** Flange Insert 13/15/17/19/21mm 10PCS Compatible with Momcozy S12 Pro/S9 Pro/S12/S9/Medela/Spectra etc Wearable Breast Pump 24mm Flange/Shield, Reduce 24mm Tunnel Down to Correct Size by lotbill
- **How much does it cost?** R267 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/588961156-flange-insert-13-15-17-19-21mm-10pcs-compatible-momcozy)

## Best For

- lotbill enthusiasts

## Why This Product

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

## Key Features

- • **Save Time & Money:** Accurate sizing tool eliminates guesswork, optimizing milk expression and reducing accessory waste.
- • **Hygienic & Reusable:** Dishwasher safe and sterilizable inserts with included cleaning brush for effortless maintenance.
- • **Safe & Gentle Material:** Crafted from BPA-free silicone, soft on delicate skin for irritation-free pumping sessions.
- • **Universal Compatibility:** Works seamlessly with top wearable pumps like Momcozy, Medela, Spectra, Willow, and Elvie.
- • **Custom Fit for Ultimate Comfort:** Five size options ensure perfect nipple fit, reducing pain and boosting pumping efficiency.

## Overview

The LOTBILL Flange Insert Kit offers 10 BPA-free silicone inserts in five precise sizes (13/15/17/19/21mm) designed to convert standard 24mm breast pump flanges into a custom fit. Compatible with leading wearable breast pumps like Momcozy, Medela, Spectra, Willow, and Elvie, these inserts enhance comfort, reduce nipple friction, and improve milk expression efficiency. Easy to clean and sterilize, they provide a hygienic, reusable solution trusted by hundreds of moms for a pain-free pumping experience.

## Description

desertcart.com : Flange Insert 13/15/17/19/21mm 10PCS Compatible with Momcozy S12 Pro/S9 Pro/S12/S9/Medela/Spectra etc Wearable Breast Pump 24mm Flange/Shield, Reduce 24mm Tunnel Down to Correct Size : Baby

Review: Must have for pumping - Perfect for my Spectra S2 and Elvie Stride. Multiple sizes made it easy to find the perfect fit. Holds up well over dozens of uses and sanitization.
Review: The material of these silicone flanges are soft and gentle on my daughter's skin - The material of these silicone flanges are soft and gentle on my daughter's skin, making it comfortable for her when she is using them. The different sizes help her to choose which one she needs and then the correct one provides a comfortable fit, ensuring efficient and pain-free pumping. They don't cause her any irritation or discomfort, allowing her to focus on expressing milk without worrying about soreness. So far after several uses they have withstood regular use and cleaning without losing their shape or effectiveness. A very nice set for pumping moms.

## Features

- Compatible with Most Breast Pumps: LOTBILL flange insert is suitable for most wearable breast pumps and 24mm breast pump flanges/shields(not for 27mm and 28mm shield), such as it is compatible with Momcozy S12 Pro/S9 Pro/S12/S9/S10/Medela/ Spectra/Willow/Elvie and other.
- The Importance of Choosing the Right Size: According to professional lactation consultants, a mother's nipple size may vary throughout the breastfeeding process. To save moms time and energy in finding the correct size, we offer an accurate and useful nipple measuring tool. Say goodbye to the pain and inefficient pumping caused by incorrect sizes.
- Care for Moms and Babies: Our flange sizing kit is made from food-grade silicone materials, free from BPA. They provide a soft texture that is gentle on delicate skin. The flange inserts fit closely with your skin, promoting efficient milk expression without any foreign body sensation. Additionally, they are reusable. It is very suitable for taking care of the health and safety of mothers and children.
- Easy to Clean and Care: Before use, the breast pump flange inserts can be sterilized with steam, boiling water, or microwave steam bags. After each use, the replacement breast pump parts can be washed with mild soapy water, then rinsed with clean water. Additionally, the sponge cleaning brush included in the kit offers convenience. To maintain optimal function, we recommend replacing the pump accessories every 2 months.
- Perfect Pumping Experience: Comfortable and suitable nipple flange insert can not only improve the efficiency of pumping, but reduce friction against the nipples or feels squeezed in the flange channel. With this nipple ruler, you can easily choose the correct size and achieve a perfect pumping experience. The 13/15/17/19/21mm flange insert combination also helps moms save time and money in choosing the appropriate size.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CL96VP1C |
| Additional Features | Portable |
| Best Sellers Rank | #2,495 in Baby ( See Top 100 in Baby ) #31 in Electric Breast Pumps |
| Brand | LOTBILL |
| Brand Name | LOTBILL |
| Color | Transparent |
| Customer Reviews | 4.6 out of 5 stars 423 Reviews |
| Included Components | Breast Flange |
| Is the item dishwasher safe? | Yes |
| Item Weight | 0.1 Kilograms |
| Manufacturer | LOTBILL |
| Material | Silicone |
| Material Type | Silicone |
| Number of Items | 10 |
| Size | 10pcs-13/15/17/19/21mm |
| Special Feature | Portable |
| UPC | 726172399673 |
| Unit Count | 10 Count |

## Product Details

- **Brand:** LOTBILL
- **Included Components:** Breast Flange
- **Material:** Silicone
- **Number of Items:** 10
- **Special Feature:** Portable

## Images

![Flange Insert 13/15/17/19/21mm 10PCS Compatible with Momcozy S12 Pro/S9 Pro/S12/S9/Medela/Spectra etc Wearable Breast Pump 24mm Flange/Shield, Reduce 24mm Tunnel Down to Correct Size - Image 1](https://m.media-amazon.com/images/I/71F0RhzR9kL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Must have for pumping
*by J***A on August 18, 2025*

Perfect for my Spectra S2 and Elvie Stride. Multiple sizes made it easy to find the perfect fit. Holds up well over dozens of uses and sanitization.

### ⭐⭐⭐⭐⭐ The material of these silicone flanges are soft and gentle on my daughter's skin
*by D***M on January 31, 2024*

The material of these silicone flanges are soft and gentle on my daughter's skin, making it comfortable for her when she is using them. The different sizes help her to choose which one she needs and then the correct one provides a comfortable fit, ensuring efficient and pain-free pumping. They don't cause her any irritation or discomfort, allowing her to focus on expressing milk without worrying about soreness. So far after several uses they have withstood regular use and cleaning without losing their shape or effectiveness. A very nice set for pumping moms.

### ⭐⭐⭐⭐⭐ Must have for pumping moms!
*by J***. on December 30, 2025*

these arrived today. I am so excited about how high-quality the nipple measuring tool is. It will definitely be better to use than the ones that come with your breast pumps. I think these phalanges will last a long time

## Frequently Bought Together

- Flange Insert 13/15/17/19/21mm 10PCS Compatible with Momcozy S12 Pro/S9 Pro/S12/S9/Medela/Spectra etc Wearable Breast Pump 24mm Flange/Shield, Reduce 24mm Tunnel Down to Correct Size
- 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.co.za/products/588961156-flange-insert-13-15-17-19-21mm-10pcs-compatible-momcozy](https://www.desertcart.co.za/products/588961156-flange-insert-13-15-17-19-21mm-10pcs-compatible-momcozy)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-02*