---
product_id: 590637508
title: "3-in-1 Flange Sizing Kit 13/15/17/19/21mm for 24mm Electric Double Breast Pump Flange/Shield, 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort, BPA-Free Essential for Moms"
brand: "nuliie"
price: "R291"
currency: ZAR
in_stock: true
reviews_count: 13
category: "Nuliie"
url: https://www.desertcart.co.za/products/590637508-3-in-1-flange-sizing-kit-13-15-17-19
store_origin: ZA
region: South Africa
---

# 5 precise flange sizes (13-21mm) BPA-free, food-grade silicone Dishwasher safe + cleaning brush included 3-in-1 Flange Sizing Kit 13/15/17/19/21mm for 24mm Electric Double Breast Pump Flange/Shield, 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort, BPA-Free Essential for Moms

**Brand:** nuliie
**Price:** R291
**Availability:** ✅ In Stock

## Summary

> 👩‍🍼 Pump smarter, not harder — comfort and efficiency in every size!

## Quick Answers

- **What is this?** 3-in-1 Flange Sizing Kit 13/15/17/19/21mm for 24mm Electric Double Breast Pump Flange/Shield, 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort, BPA-Free Essential for Moms by nuliie
- **How much does it cost?** R291 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/590637508-3-in-1-flange-sizing-kit-13-15-17-19)

## Best For

- nuliie enthusiasts

## Why This Product

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

## Key Features

- • **Safe & Pure:** Crafted from BPA-free, food-grade silicone for peace of mind and gentle skin contact.
- • **Effortless Hygiene:** Dishwasher safe with a bonus cleaning brush to keep your pump accessories spotless and ready.
- • **Boost Your Milk Flow:** Optimized flange sizing enhances comfort and efficiency, helping increase milk output painlessly.
- • **Perfect Fit, Every Time:** Five versatile flange sizes ensure a custom, comfortable pumping experience tailored to your unique needs.
- • **Smart Sizing Made Simple:** Includes a nipple measurement ruler to eliminate guesswork and guarantee the ideal fit.

## Overview

The Nuliie 3-in-1 Flange Sizing Kit offers 10 BPA-free silicone inserts in five precise sizes (13-21mm) compatible with most 24mm breast pump shields. Designed to boost pumping comfort and efficiency, this lightweight, dishwasher-safe kit includes a nipple ruler and cleaning brush, making it an essential, hygienic accessory for breastfeeding moms seeking a personalized, pain-free pumping experience.

## Description

desertcart.com : Nuliie 3-in-1 Flange Sizing Kit 13/15/17/19/21mm for 24mm Electric Double Breast Pump Flange/Shield, 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort, BPA-Free Essential for Moms : Baby

Review: Breastfeeding necessity - I’m so glad I found this flange sizing kit—it has made a huge difference in my pumping experience. The silicone is really high-quality, soft but durable, and super easy to clean, which is a must when you’re using something this often. I love that it comes with both a sizing chart and a conversion chart. It took all the guesswork out of figuring out the right fit, and having everything included made the process so much less stressful. The little cleaning tool it comes with is also such a thoughtful bonus—it makes keeping everything sanitary quick and easy. The biggest difference for me has been comfort and output. Since using the correct size, I’ve noticed a significant increase in my milk supply and way less pain while pumping. It’s honestly been a game changer. If you’re breastfeeding or pumping and unsure about your flange size, I highly recommend this kit. It’s simple, effective, and made a noticeable difference for me right away.
Review: I recommend this size kit to ANY new mom! - I recommend this kit for ANY new mom. This flange sizing kit was super helpful and made figuring out the correct size so much easier. I love that it includes multiple sizes all in one kit, especially for new breastfeeding moms trying to get the best fit for comfort and output. The material feels durable, the measurements seem accurate, and it worked well with my pump setup. Definitely a useful little tool to have before spending money on multiple flange inserts that may not fit correctly.

## Features

- [HIGH COMPATIBILITY] Nuliie flange sizing kit 13/15/17/19/21mm (10pcs) ffits most 24mm flanges/shields for electric double breast pump and manual breast pump use. It will reduce the 24mm shield nipple tunnel down to correct size. Note: Not compatible with 27-28mm shields.
- [MUST-HAVE ACCESSORY FOR BREAST PUMPS] Enhance your pumping comfort and efficiency with our essential flange inserts. The soft and flexible silicone provides a gentle and secure fit, helping to create a smoother and more comfortable pumping experience. A must-have for any breastfeeding mother who needs to pump milk.
- [SAFE & EASY TO CLEAN] Ensure safety and maintain the performance of your breast pump with our flange inserts. Made from food-grade liquid silicone and free from BPA, these inserts are easy to clean and dishwasher safe. We recommend washing them promptly after each use and replacing every 2 months to keep optimal functionality. Plus, includes a complimentary cleaning brush.
- [CARING SERVICE] With our silicone flange inserts, you receive a free nipple measurement ruler to help you choose the perfect size. Compare the size of your nipple before and after pumping to ensure the most comfortable and effective fit. We provide unparalleled after-sale for mothers by answering your questions anytime and anywhere.
- [FRIENDLY REMINDER] Nipple size can vary throughout different breastfeeding stages, requiring different sizes of flange inserts for your breast pump. If you're aware of your exact nipple size, we recommend purchasing the corresponding size directly. However, if you're unsure, we suggest starting with our 10-pack of Flange Inserts, which contains five different sizes to ensure you find the perfect fit.
- Your order may come with either the new or old packaging, shipped randomly. Rest assured, both versions guarantee the same high-quality product inside.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CMPBBHMZ |
| Additional Features | Comfort and Efficiency, Lightweight, Painless |
| Best Sellers Rank | #123 in Baby ( See Top 100 in Baby ) #1 in Electric Breast Pumps |
| Brand | Nuliie |
| Brand Name | Nuliie |
| Color | Transparent |
| Customer Reviews | 4.6 out of 5 stars 4,119 Reviews |
| Included Components | 13/15/17/19/21mm Flange Inserts (10PCS), Cleaning Brush, Nipple Ruler * 1PCS |
| Is the item dishwasher safe? | Yes |
| Item Weight | 0.04 Pounds |
| Manufacturer | Nuliie |
| Manufacturer Part Number | NEMMZH |
| Material | Silicone |
| Material Type | Silicone |
| Material Type Free | BPA Free, Bisphenol-S (BPS) Free, Phthalate Free |
| Model Name | NEMMZH |
| Model Number | NEMMZH |
| Number of Items | 10 |
| Size | 13/15/17/19/21 mm 10PCS for 24 mm shield |
| Special Feature | Comfort and Efficiency, Lightweight, Painless |
| Unit Count | 10 Count |

## Product Details

- **Brand:** Nuliie
- **Included Components:** 13/15/17/19/21mm Flange Inserts (10PCS), Cleaning Brush, Nipple Ruler * 1PCS
- **Material:** Silicone
- **Material Type Free:** BPA Free, Bisphenol-S (BPS) Free, Phthalate Free
- **Special Feature:** Comfort and Efficiency, Lightweight, Painless

## Images

![3-in-1 Flange Sizing Kit 13/15/17/19/21mm for 24mm Electric Double Breast Pump Flange/Shield, 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort, BPA-Free Essential for Moms - Image 1](https://m.media-amazon.com/images/I/81PimULRxGL.jpg)

## Available Options

This product comes in different **Size, Unit Count** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Breastfeeding necessity
*by G***I on April 15, 2026*

I’m so glad I found this flange sizing kit—it has made a huge difference in my pumping experience. The silicone is really high-quality, soft but durable, and super easy to clean, which is a must when you’re using something this often. I love that it comes with both a sizing chart and a conversion chart. It took all the guesswork out of figuring out the right fit, and having everything included made the process so much less stressful. The little cleaning tool it comes with is also such a thoughtful bonus—it makes keeping everything sanitary quick and easy. The biggest difference for me has been comfort and output. Since using the correct size, I’ve noticed a significant increase in my milk supply and way less pain while pumping. It’s honestly been a game changer. If you’re breastfeeding or pumping and unsure about your flange size, I highly recommend this kit. It’s simple, effective, and made a noticeable difference for me right away.

### ⭐⭐⭐⭐⭐ I recommend this size kit to ANY new mom!
*by H***S on May 20, 2026*

I recommend this kit for ANY new mom. This flange sizing kit was super helpful and made figuring out the correct size so much easier. I love that it includes multiple sizes all in one kit, especially for new breastfeeding moms trying to get the best fit for comfort and output. The material feels durable, the measurements seem accurate, and it worked well with my pump setup. Definitely a useful little tool to have before spending money on multiple flange inserts that may not fit correctly.

### ⭐⭐⭐⭐⭐ Soft , good fit
*by Y***R on December 13, 2025*

I love that it includes multiple sizes (13, 15, 17, 19, and 21mm), which makes it easy to find the perfect fit without having to buy separate inserts. The sizing variety is especially helpful for moms who are still figuring out what works best for them. The silicone is soft, flexible, and very comfortable against the skin. Once inserted into my 24mm flange, it stayed securely in place and created a better seal, which noticeably improved comfort and suction. Pumping felt less painful and more efficient compared to using a standard hard plastic flange. Cleaning is simple, and the inserts seem durable even after multiple washes. This kit is a great value for the price and perfect for moms who want a more customized, comfortable pumping experience. Highly recommend for anyone using 24mm breast pump flanges who wants better comfort and fit!

## Frequently Bought Together

- Nuliie 10PCS Flange Sizing Kit 13/15/17/19/21mm for 24mm Flange/Shield of Most Pumps, Silicone Flanges Insert for Momcozy/Spectra Electric Breast Pumps, Pumping Essential Kit for Moms
- Medela Manual breast pump with Flex Shields Harmony Single Hand for More Comfort and Expressing More Milk
- haakaa Manual Breast Pump for Breastfeeding, Silicone, Clear 4oz/100ml

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-06-24*