CustomFit™ 2-Piece Hard Flanges Non-Sterile
The Ameda CustomFit™ 2-Piece Flanges have smaller, precise sizes: 17mm, 19mm & 21mm. This two-piece design pairs a universal base with interchangeable flange sizes, allowing you to fine-tune fit and help maintain a secure seal during pumping. Designed to work seamlessly with Ameda HygieniKit® milk collection systems and Ameda breast pumps*, the CustomFit™ flange system simplifies installation while helping ensure a secure fit that supports pumping efficiency.
*Not including Ameda GLO
Flange Fit Guide (English): Download our FREE printable sizing guide to measure nipple diameter and help determine your correct flange size.
CustomFit™ 2-Piece Hard Flanges Non-Sterile - 17mm Flanges & Bases is backordered and will ship as soon as it is back in stock.
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Key Features
Key Features
Technical Features
Technical Features
FAQs
FAQs
Resources
Resources
Comfort Comparison
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| Fit & Feel | Hard 2-Piece Flanges (17, 19, 21mm) | Soft Universal Inserts (11–21mm) |
|---|---|---|
| Sizing Strategy | Three precise small sizes on one shared base | Micro-adjustment range (11–21 mm) used inside compatible hard flange |
| Adjustment Method | Swap sizes in seconds — keep base, change flange | Change insert size within the compatible hard flange as needed |
| Feel & Stability | Firm, stable feel; rim maintains consistent geometry | Soft silicone provides a cushioned nipple tunnel |
| Elastic Tissue | Close-fitting rigid tunnel may help limit excess tissue movement | Silicone interface may enhance comfort once correct size is established |
| Durability & Reuse | Designed for repeated size changes and long-term shape retention | Replace periodically to maintain comfort and performance |
| Best Suited For | Patients needing smaller rigid hard sizes with repeatable geometry and quick size changes | Patients who have established size but prefer a cushioned internal interface |
| Compatibility |
All Ameda HygieniKits and Ameda Breast Pumps* *Not including Ameda GLO |
All Ameda HygieniKits when used with standard 25mm flanges; Ameda Breast Pumps (including Ameda GLO when used with GLO 24mm flanges) |
Compatible Products
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View ProductAmeda Platinum® Multi-User Hospital Grade Electric Breast Pump
Unit price /Unavailable -
![A collection of items related to breastfeeding. In the center, there is a white electronic breast pump with a digital display showing a timer and settings. To the sides, two clear bottles are attached to the pump via transparent tubes, and additional bottles are arranged nearby. There are various breast shields and adapters in white, alongside a black carrying bag positioned in the background. A power adapter and cords are also visible, indicating that the pump is electrically powered.]()
![A black tote bag is placed centrally, surrounded by various components of a breast pump kit. The kit includes two clear breast pump flanges, a small white electronic unit with a digital display and buttons, and several collection bottles with lids. There are also small clear lids and connectors, as well as a power adapter with a cord. The items are organized in a way that highlights their functionality for breastfeeding mothers.]()
![A collection of breastfeeding pump accessories is displayed on a white background. The items include a white breast pump device with a digital timer on its side, several transparent bottles with white lids, and various size breast shields in different stages of assembly. There are also blue caps, white connectors, and a charger with a cord. All of these components are organized beside a black carrying bag that is partially open, revealing additional storage for the items.]()
View ProductAmeda Mya Joy Hospital Strength Portable Electric Breast Pump
Rated 4.9 out of 5 stars63From $134.99Unit price /Unavailable -
View ProductAmeda® Pearl® Multi-User Hospital Grade Breast Pump
Unit price /Unavailable -
![The image shows a collection of breastfeeding supplies arranged on a white background. Central to the image is the Ameda Mya Joy PLUS breast pump, depicted with a digital display that shows a timer. There are two clear milk collection bottles positioned beside the pump, each connected to breast pump flanges. Additional items include a black tote bag, a power adapter with a USB-C cord, two small plastic containers, and a set of extra valves and diaphragms.]()
![An arrangement of items for breastfeeding in a bright setup. There is an Ameda Mya Joy PLUS breast pump prominently displayed in the center, alongside an AC power adapter with a USB-C cord. Several milk collection bottles and accessories are neatly arranged, including dual HygieniKit® components, including two sets of flanges and extra valves, all in clear plastic.]()
View ProductAmeda Mya Joy PLUS Rechargeable, Quiet, and Portable Double Breast Pump
Rated 4.8 out of 5 stars49From $159.99Unit price /Unavailable
Product Reviews
Clinical References & Educational Resources
Washington State DOH – WIC Flange FITS™ Guide (adapted from IBCLC Jeanette Mesite Frem)
“Find your best-fit hard plastic flange first; then try silicone flanges/inserts and compare comfort/output.”
Learn moreAcademy of Breastfeeding Medicine (ABM) Clinical Protocol #36 (2022) – Mastitis spectrum
Notes that improper flange size and pump settings can cause nipple/areolar trauma; fit is part of management.
Learn moreABM Clinical Protocol #26 (2016) – Persistent pain with breastfeeding
Recommends observing pumping and correcting flange fit; over-suction/poor fit → pain/trauma.
Learn moreLactation Network (IBCLC-authored): How to master breast pump flange fit
Explains that correct fit avoids rubbing/friction and that areola should not be drawn into the tunnel.
Learn morePubMed (2025) – “Flange Size Matters: A Comparative Pilot Study …”
Supports individualized sizing; smaller, precise sizes can be used without compromising comfort/output.
Learn more