---
product_id: 323058632
title: "ComfortFit Breast Pump Flanges, Size 21mm, 2 Count"
brand: "lansinoh"
price: "$18.63"
currency: USD
in_stock: true
reviews_count: 13
category: "Lansinoh"
url: https://www.desertcart.us/products/323058632-comfortfit-breast-pump-flanges-size-21mm-2-count
store_origin: US
region: United States of America
---

# 5 precise flange sizes for perfect fit Dishwasher safe for effortless cleaning Secure seal for max suction efficiency ComfortFit Breast Pump Flanges, Size 21mm, 2 Count

**Brand:** lansinoh
**Price:** $18.63
**Availability:** ✅ In Stock

## Summary

> 👑 Fit like a queen, pump like a pro.

## Quick Answers

- **What is this?** ComfortFit Breast Pump Flanges, Size 21mm, 2 Count by lansinoh
- **How much does it cost?** $18.63 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/323058632-comfortfit-breast-pump-flanges-size-21mm-2-count)

## Best For

- lansinoh enthusiasts

## Why This Product

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

## Key Features

- • **Hassle-Free Cleaning:** Dishwasher safe and easy to wash, keeping your pumping routine hygienic and simple.
- • **Leak-Proof Secure Seal:** Engineered to create a tight seal, maximizing milk extraction with every session.
- • **Soft, Flexible Comfort Rim:** Experience gentle, skin-friendly silicone that hugs your curves without irritation.
- • **Tailored Fit for Every Mom:** Choose from 5 ergonomic flange sizes to ensure ultimate comfort and pumping efficiency.
- • **Seamless Lansinoh Compatibility:** Designed to perfectly fit Lansinoh Manual, Signature Pro, and Smartpump models.

## Overview

Lansinoh ComfortFit Breast Pump Flanges (21mm, 2 count) deliver a custom, comfortable pumping experience with soft silicone rims and a secure seal that boosts suction efficiency. Compatible with Lansinoh pumps and available in 5 sizes, these BPA-free flanges are dishwasher safe for easy cleaning, trusted by thousands of moms worldwide.

## Description

Flanges fit for a queen. Get the right fit to maximize your pumping sessions with Lansinoh’s ComfortFit Flanges. Designed for comfort with soft, flexible breast pump flange rims that hug your curves to ensure a tight seal and maximize pumping efficiency. Check out our flange fit guide to learn more about sizing. Available in 5 sizes to fit every session, every breast, every time. Compatible with Lansinoh Manual Pump, Signature Pro, and Smartpump. For nearly 40 years, new mothers have trusted Lansinoh to support and care for them while they enter the messy magic of motherhood. Born from one mother’s realization that birthing people often go without the support they need and deserve, Lansinoh proudly stands with mothers all over the world. Our journey started with award winning, doctor recommended HPA Lanolin Nipple Cream: today, we offer a comprehensive collection of solutions to help new parents navigate pregnancy, birth, breastfeeding, and pumping. Our product range includes organic nipple balm, disposable nursing pads, washable nursing pads, breastmilk storage bags, manual breast pumps and double electric breast pumps, postpartum essentials, baby bottles, and more. Lansinoh products are available in more than 70 countries and the company is committed to being climate neutral by 2030.

Review: Comfortable but secure flanges - These are excellent flanges they are very comfortable but also feel very secure. I feel like a get a better suction with these flanges since they fit so well around the breast.
Review: Good purchase - I’m not sure why this size doesn’t come with the pump. It seems like most people need this size. Def get if your flanges don’t fit!

## Features

- DESIGNED FOR COMFORT - ComfortFit Flanges include a soft, flexible rim that's soft on mom's skin
- SECURE SEAL - The rim on the breast pump flange hugs your curves for a tight seal and more efficient pumping
- MORE SIZES TO FIT EVERY MOTHER - Getting the right fit can improve comfort and pumping efficiency so we offer 5 flange sizes to fit all shapes and sizes: 21mm, 25mm, 28mm, 30.5mm, and 36mm
- LANSINOH COMPATIBLE - Fits perfectly with the Lansinoh Manual Breast Pump, Signature Pro, and Smartpump breast pumps
- EASY TO CLEAN - Wash with warm, soapy water or put in the dishwasher between uses

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B093G3TRSW |
| Additional Features | Ergonomic |
| Best Sellers Rank | #4,153 in Baby ( See Top 100 in Baby ) #60 in Electric Breast Pumps |
| Brand Name | Lansinoh |
| Color | Purple |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,641) |
| Included Components | 2 ComfortFit® Flanges (21mm) |
| Item Weight | 3.04 Ounces |
| Manufacturer | Lansinoh Laboratories |
| Manufacturer Part Number | 30044677535107 |
| Material Type | Plastic, Silicone |
| Material Type Free | BPA Free |
| Model Number | 30044677535107 |
| Number of Items | 2 |
| Operation Mode | Manual |
| Power Source | Battery Powered |
| Product Style | 21mm |
| Size | 2 Count (Pack of 1) |
| UPC | 044677535106 |
| Unit Count | 2 Count |

## Product Details

- **Brand:** Lansinoh
- **Material:** Plastic, Silicone
- **Operation Mode:** Manual
- **Power Source:** Battery Powered
- **Special Feature:** Ergonomic

## Images

![ComfortFit Breast Pump Flanges, Size 21mm, 2 Count - Image 1](https://m.media-amazon.com/images/I/613R8jMZDLL.jpg)

## Available Options

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

## Questions & Answers

**Q: What size are these flanges?**
A: These are a size Large, (30.5 mm).

**Q: Can you use this flanges with any breastpump?**
A: Thank you for your question. We have tested our ComfortFit Flanges only with Lansinoh pumps, so we cannot guarantee compatibility or optimal performance with competitor's pumps. We hope this provides some clarity.

**Q: Do these flanges fit the standard flange body, or do you have to buy a new set?**
A: Mine do not fit into the pump. I got the 36mm flange and they are slightly smaller on the connecting end so they just fall right out. Wasted time and money...

**Q: What size breast do these fit ?**
A: I have double d and they fit but its more the nipple that needs to fit not the breast.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Comfortable but secure flanges
*by G***Z on February 27, 2026*

These are excellent flanges they are very comfortable but also feel very secure. I feel like a get a better suction with these flanges since they fit so well around the breast.

### ⭐⭐⭐⭐⭐ Good purchase
*by R***N on July 14, 2025*

I’m not sure why this size doesn’t come with the pump. It seems like most people need this size. Def get if your flanges don’t fit!

### ⭐⭐⭐⭐⭐ Fit perfectly to the breast pump!
*by C***R on March 12, 2025*

The flanges fit well with my Lansinoh pump and provide a snug, secure fit without causing any discomfort. They have been a total game-changer for my pumping routine! They’re incredibly comfortable and provide a great seal, helping to ensure that my pumping sessions are as efficient as possible. The soft, flexible material makes them gentle on my skin, and I love how easy they are to clean and maintain.

## Frequently Bought Together

- Lansinoh ComfortFit Breast Pump Flanges, Size 21mm, 2 Count
- Lansinoh Manual Breast Pump, Hand Pump with Comfortable Flange, Includes 5oz Baby Bottle with Slow Flow Nipple, Breastfeeding Essentials
- Lansinoh Breastmilk Storage Breast Pump Bottles, 4 Count

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-17*