---
product_id: 704911634
title: "Flange Sizing Kit 3 in 1 with 10PCS Flange Inserts 13/15/17/19/21mm, Silicone Flanges Insert Kit for 24mm Flange/Shield, Pumping Essentials Kit for Moms"
brand: "nursi luna"
price: "₩93277"
currency: KRW
in_stock: true
reviews_count: 9
category: "Nursi Luna"
url: https://www.desertcart.kr/products/704911634-flange-sizing-kit-3-in-1-with-10pcs-flange-inserts
store_origin: KR
region: South Korea
---

# 5 precise flange sizes (13-21mm) Food-grade, BPA-free silicone Includes cleaning brush & dishwasher safe Flange Sizing Kit 3 in 1 with 10PCS Flange Inserts 13/15/17/19/21mm, Silicone Flanges Insert Kit for 24mm Flange/Shield, Pumping Essentials Kit for Moms

**Brand:** nursi luna
**Price:** ₩93277
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Flange Sizing Kit 3 in 1 with 10PCS Flange Inserts 13/15/17/19/21mm, Silicone Flanges Insert Kit for 24mm Flange/Shield, Pumping Essentials Kit for Moms by nursi luna
- **How much does it cost?** ₩93277 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/704911634-flange-sizing-kit-3-in-1-with-10pcs-flange-inserts)

## Best For

- nursi luna enthusiasts

## Why This Product

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

## Key Features

- • **Safe & Hygienic:** Made from BPA-free, food-grade silicone with easy cleaning tools to keep mom and baby safe.
- • **Expert-Backed Design:** Developed by an IBCLC for scientifically proven pumping efficiency and nipple protection.
- • **Mom-Approved Essential:** Highly rated by thousands of new moms for pain-free pumping and improved milk flow.
- • **Perfect Fit Every Time:** 10 silicone flange inserts in 5 sizes ensure personalized comfort and maximize milk output.
- • **Adaptable Through All Stages:** Adjust flange size effortlessly as nipple size changes during breastfeeding journey.

## Overview

The Nursi Luna Flange Sizing Kit 3 in 1 offers 10 BPA-free silicone flange inserts in five precise sizes (13-21mm) designed by a certified lactation consultant. Compatible with 24mm breast pump shields, it ensures optimal fit and comfort throughout breastfeeding stages. The kit includes a nipple ruler and cleaning brush, making it a hygienic, expert-approved essential for new moms seeking pain-free, efficient pumping.

## Description

Free delivery and returns on eligible orders of £20 or more. Buy Nursi Luna Flange Sizing Kit 3 in 1 with 10PCS Flange Inserts 13/15/17/19/21mm, Silicone Flanges Insert Kit for 24mm Flange/Shield, Pumping Essentials Kit for Moms at desertcart UK.

Review: Amazing - After using the wrong flang size and wondering why pumping was causing pain this was a life saver. The measurements are spot on and the adjusters fitted right into my current pump. Huge difference in comfort and milk output.
Review: A necessity for pumping mums! - Would recommend to anyone pumping, standard flanges on breast pumps are way too big and stopped me from pumping. Would have pumped more if I'd had these from the beginning. The nipple measurement guide really helps with gauging size. Easy to clean, I washed with hot soapy water and threw in the steriliser.

## Features

- Essential for New Moms: Nursi Luna Flange Sizing Kit 3 in 1, developed by an IBCLC (International Board Certified Lactation Consultant), enhances comfort and pumping efficiency for new moms, addressing common confusion and discomfort during breastfeeding.
- Highly Compatible: 10Pcs Flange sizing kit come in a variety of sizes to choose from 13/15/17/19/21mm (2 flange inserts of each size) Fits with 24mm flanges/shields. Note: Not compatible with 27-28mm shields
- Getting The Right Flange Size: Nipple size can change during different breastfeeding stages, requiring adjustments for optimal comfort. Our nipple ruler based on IBCLC recommendations, provides precise sizing to ensure a perfect fit and efficient pumping
- Safe For Baby And Mom: Made from food-grade silicone, BPA-free, easy to clean, and dishwasher safe. Includes a sponge cleaning brush. Replace flange insert every 2 months for optimal performance
- Perfect Gift for New Moms: Our silicone flange inserts help mothers quickly and comfortably find the right size, ensuring a smooth pumping experience.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D3Q9MQ9Z |
| ASIN  | B0D3Q9MQ9Z |
| Best Sellers Rank | 7,036 in Baby Products ( See Top 100 in Baby Products ) 138 in Breast Pumps & Accessories |
| Brand | Nursi Luna |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,640) |
| Customer reviews | 4.6 4.6 out of 5 stars (1,640) |
| Date First Available | 3 Nov. 2024 |
| Item model number  | FSK-FCS-01 |
| Manufacturer  | Nursi Luna |
| Product Dimensions  | 8.31 x 10.31 x 10.69 cm; 148 g |
| Units | 1.00 count |

## Product Details

- **Brand:** Nursi Luna
- **Colour:** Green
- **Dishwasher safe?:** Yes
- **Included components:** 13/15/17/19/21mm Flange Inserts * 2PCS, Cleaning Brush, Nipple Ruler Green * 1PCS
- **Manufacturer:** Nursi Luna
- **Material:** Silicone
- **Number of items:** 1
- **Size:** 10PCS 13/15/17/19/21mm
- **Special feature:** Lightweight
- **UPC:** 791986852645

## Images

![Flange Sizing Kit 3 in 1 with 10PCS Flange Inserts 13/15/17/19/21mm, Silicone Flanges Insert Kit for 24mm Flange/Shield, Pumping Essentials Kit for Moms - Image 1](https://m.media-amazon.com/images/I/717C8i9YgzL.jpg)
![Flange Sizing Kit 3 in 1 with 10PCS Flange Inserts 13/15/17/19/21mm, Silicone Flanges Insert Kit for 24mm Flange/Shield, Pumping Essentials Kit for Moms - Image 2](https://m.media-amazon.com/images/I/61LJf1rYAfL.jpg)
![Flange Sizing Kit 3 in 1 with 10PCS Flange Inserts 13/15/17/19/21mm, Silicone Flanges Insert Kit for 24mm Flange/Shield, Pumping Essentials Kit for Moms - Image 3](https://m.media-amazon.com/images/I/71MijmNdw1L.jpg)
![Flange Sizing Kit 3 in 1 with 10PCS Flange Inserts 13/15/17/19/21mm, Silicone Flanges Insert Kit for 24mm Flange/Shield, Pumping Essentials Kit for Moms - Image 4](https://m.media-amazon.com/images/I/71jvbDa-kyL.jpg)
![Flange Sizing Kit 3 in 1 with 10PCS Flange Inserts 13/15/17/19/21mm, Silicone Flanges Insert Kit for 24mm Flange/Shield, Pumping Essentials Kit for Moms - Image 5](https://m.media-amazon.com/images/I/610Qu3-HH4L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Amazing
*by P***T on 16 January 2026*

After using the wrong flang size and wondering why pumping was causing pain this was a life saver. The measurements are spot on and the adjusters fitted right into my current pump. Huge difference in comfort and milk output.

### ⭐⭐⭐⭐⭐ A necessity for pumping mums!
*by L***N on 21 July 2025*

Would recommend to anyone pumping, standard flanges on breast pumps are way too big and stopped me from pumping. Would have pumped more if I'd had these from the beginning. The nipple measurement guide really helps with gauging size. Easy to clean, I washed with hot soapy water and threw in the steriliser.

### ⭐⭐⭐⭐ Improve breast pump output
*by J***E on 19 March 2025*

These certainly helped up the amount of milk extracted each pumping session. The flange size makes a difference to comfort too. My wife made plenty of use of the size that she found to be right for her. This set included every thing needed to correctly size.

## Frequently Bought Together

- Nursi Luna Flange Sizing Kit 3 in 1 Ultimate with 10PCS Flange Inserts 13/15/17/19/21mm, Nipple Ruler, Cleaning Brush, Silicone Flange Insert Kit for 24mm Most Pumps, Pumping Breastfeeding Essentials
- 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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**Shop now:** [https://www.desertcart.kr/products/704911634-flange-sizing-kit-3-in-1-with-10pcs-flange-inserts](https://www.desertcart.kr/products/704911634-flange-sizing-kit-3-in-1-with-10pcs-flange-inserts)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-06*