---
product_id: 421651783
title: "Breast Pump Sizing Insert - 17mm - Flange Inserts, Improves Fit and Comfort for Breast Pumping Moms, Fits in 24mm Willow Breast Pump Flange - 2ct"
brand: "willow"
price: "€ 28.01"
currency: EUR
in_stock: true
reviews_count: 5
category: "Willow"
url: https://www.desertcart.it/products/421651783-breast-pump-sizing-insert-17mm-flange-inserts-improves-fit-comfort
store_origin: IT
region: Italy
---

# Precise 17mm size for optimized fit & suction BPA-free silicone for safe, skin-friendly use Reusable & dishwasher safe for effortless cleaning Breast Pump Sizing Insert - 17mm - Flange Inserts, Improves Fit and Comfort for Breast Pumping Moms, Fits in 24mm Willow Breast Pump Flange - 2ct

**Brand:** willow
**Price:** € 28.01
**Availability:** ✅ In Stock

## Summary

> ✨ Pump smarter, not harder — comfort and control in every drop! 🍼

## Quick Answers

- **What is this?** Breast Pump Sizing Insert - 17mm - Flange Inserts, Improves Fit and Comfort for Breast Pumping Moms, Fits in 24mm Willow Breast Pump Flange - 2ct by willow
- **How much does it cost?** € 28.01 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/421651783-breast-pump-sizing-insert-17mm-flange-inserts-improves-fit-comfort)

## Best For

- willow enthusiasts

## Why This Product

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

## Key Features

- • **Tailored Comfort Fit:** Snug 17mm flange insert designed for smaller sizes under 21mm, maximizing pumping efficiency and comfort.
- • **Seamless Compatibility:** Works perfectly with 24mm Willow breast pump flanges and containers—no guesswork, just flawless fit.
- • **Join the Willow Movement:** Trusted by over 300,000 moms who’ve upgraded to hands-free, app-connected pumping freedom.
- • **Premium Silicone Material:** Crafted from flexible, BPA-free silicone that’s gentle on skin and dishwasher safe for busy moms.
- • **Hygiene & Performance Boost:** Replace every 3 months to maintain peak suction and output, ensuring your pump performs like new.

## Overview

The Willow Breast Pump Sizing Insert in 17mm is a BPA-free, dishwasher-safe silicone accessory designed to improve fit and comfort for moms with smaller breast sizes. Compatible with 24mm Willow flanges, it enhances suction and output while being easy to clean and reusable. Recommended for replacement every 3 months, it’s part of a trusted system used by over 300,000 moms seeking hands-free, efficient pumping.

## Description

Designed with moms in mind, Willow Breast Pump Flange Inserts help optimize comfort and output for moms who need a wearable breast pump flange smaller than 21mm. Made from BPA-free, dishwasher-safe silicone, each flange insert is easy to assemble, clean and remove. Clear color delivers easy visibility for a secure, snug fit. Available in 13mm, 15mm, 17mm, 19mm and 21mm, our flange inserts are compatible with 24mm Willow flanges and containers. We recommend replacing breast pump inserts every 3 months for optimal breast pumping performance. Normal wear and tear can impact suction and output. You deserve a pump you love. Powerful, comfortable, fully in bra and app-connected, our wearable pumps for breastfeeding are simply built different. So cut the cords, ditch the dupes and join the 300,000 moms who have brought Willow into their lives. Find your perfect Willow breast pump today and unlock the convenience of hands-free pumping.

Review: Comfortable and helps my flanges maintain suction!! Highly recommend
Review: Getting the correct flange insert is absolutely necessary when pumping. I got the Willow Go which comes with a standard 24mm flange. I use a 17mm so I could have bought a random one off desertcart but I wanted to make sure it was compatible with my pump so I just brought this brand. I do like the scalloped edges, it’s cute and adds a lil extra razzle dazzle to it. It fits perfectly in my pump. I did give 4 stars because of the price. $20 for these seems pricey and I’m sure I could have gotten other ones cheaper.

## Features

- Reusable Breast Pump Flange Inserts: Designed to help optimize comfort and output for moms who measure smaller than 21mm, Willow Breast Pump Sizing Inserts in 17mm offers the pumping convenience you deserve
- Comfortable, Silicone Design: Flexible, BPA free silicone provides a snug, secure fit; Dishwasher safe, flange inserts for Willow Breast Pump are easy to clean; Clear color provides easy visibility
- Compatible with Any Breast Pump: Pair with 24mm breast pump flanges and reusable containers; Keep a spare set on hand to minimize washing between hands free pumping sessions
- Find Your Perfect Fit: Breast pump inserts are available in 5 sizes: 13mm, 15mm, 17mm, 19mm and 21mm; Reference Willow's size chart to determine your size for an optimal pumping experience
- Trusted and True: We recommend replacing breast pump flange inserts every 3 months for optimal performance; Join the 300,000 moms who have brought Willow into their homes and lives

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09B7VMH7S |
| ASIN  | B09B7VMH7S |
| Brand | Willow |
| Customer Reviews | 4.6 4.6 out of 5 stars (497) |
| Customer reviews | 4.6 4.6 out of 5 stars (497) |
| Date First Available | 9 October 2021 |
| Item model number  | INSERT |
| Manufacturer  | Willow |
| Product Dimensions  | 12.7 x 3.81 x 14.48 cm; 18 g |
| Units | 1.0 Count |

## Product Details

- **Brand:** Willow
- **Included components:** Flange
- **Material:** Silicone
- **Power source:** Battery Powered
- **Special features:** Reusable

## Images

![Breast Pump Sizing Insert - 17mm - Flange Inserts, Improves Fit and Comfort for Breast Pumping Moms, Fits in 24mm Willow Breast Pump Flange - 2ct - Image 1](https://m.media-amazon.com/images/I/31LUxe1lEfL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***A on 4 December 2025*

Comfortable and helps my flanges maintain suction!! Highly recommend

### ⭐⭐⭐⭐ Review
*by A***R on 27 July 2025*

Getting the correct flange insert is absolutely necessary when pumping. I got the Willow Go which comes with a standard 24mm flange. I use a 17mm so I could have bought a random one off Amazon but I wanted to make sure it was compatible with my pump so I just brought this brand. I do like the scalloped edges, it’s cute and adds a lil extra razzle dazzle to it. It fits perfectly in my pump. I did give 4 stars because of the price. $20 for these seems pricey and I’m sure I could have gotten other ones cheaper.

### ⭐⭐⭐⭐⭐ Review
*by D***E on 3 April 2024*

These often need to get replaced and although the Willow website constantly provides deals and sales for them, they can be hard to obtain if needed immediately. Thankful they were here on Amazon. They're legit. They are Willow brand and fit perfectly in my WillowGo pumps. I've never had any issues with them and am going on my 7 months of using these pumps with shields. These are very comfortable, durable, can be washed in the dishwasher if needed but I find simply scrubbing and using hot water and soap work well on a daily basis. I deep clean and sanitize them every two weeks. Highly recommend for mamas in need of inserts that come shipped in such a short time!

## Frequently Bought Together

- Willow Breast Pump Sizing Insert, 17mm, 2 Ct, Flange Inserts for Breast Pump, Improves Fit and Comfort for Breast Pumping Moms, Fits in 24mm Willow Breast Pump Flange
- Willow Go Breast Pump Diaphragm Set, 2 Ct, Pump Diaphragms for Spare Use or Replacement, Pair with Willow Go Wearable Breast Pump for Hands Free Pumping, BPA Free and Dishwasher Safe
- Willow Go Breast Pump Duckbill Valve Set, 2 Ct, Pump Valves for Spare Use or Replacement, Pair with Willow Go Wearable Breast Pump for Hands Free Pumping, BPA Free and Dishwasher Safe

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-02-22*