afontoto Flange Insert 21mm for S9/S12 Pro Wearable Pumps (24mm to 21mm)

afontoto Flange Insert 21mm — Adaptable Comfort for Wearable Pumps

The afontoto 21mm flange insert is designed to adapt 24mm shields to a 21mm opening for wearable breast pumps like S9, S12, S9Pro, and S12Pro. Supplied as a two-piece transparent pack, it’s engineered to fit smoothly into your existing 24mm shield ecosystem, giving you a flexible option without replacing your entire setup.

Enhanced fit, potential comfort, and real-world use

Choosing the right flange insert can influence how you feel during pumping. If you notice changes in your nipple shape or a sense of rubbing inside the shield tunnel, a properly sized insert may help align the opening with your breast tissue. While experiences vary, a better fit can contribute to a calmer pumping session and a gentler overall feel.

In daily use, the 21mm insert works with most 24mm shields and milk collectors, offering a practical upgrade path for compatible wearables. The option to swap to a smaller opening without changing other components can simplify routine adjustments during the day.

Safety, material quality, and care

Constructed from BPA-free silicone, the insert is soft, odorless, and designed for repeated use with pump parts that contact milk. AFontOTO emphasizes that all milk-contact parts are BPA-free, aiming to provide peace of mind about your baby’s milk while you pump.

Cleaning is straightforward: rinse after each use with warm soapy water, then dry. The silicone material supports sanitization via steam, boiling water, or microwave steam bags, making it convenient for busy days.

What you get and practical tips

• Two 21mm flange inserts (transparent) compatible with 24mm shields
• Easy upgrade option for S9, S12, S9Pro, and S12Pro wearable pumps

• Clear visibility helps you assess fit during pumping sessions
• Soft, flexible silicone aims to reduce pressure points for a more comfortable session

Notes on use and expectations

These inserts are designed to offer a customizable fit as you pump. They provide a practical path to comfort and efficiency but results will vary with individual pumping styles and equipment. If you have questions or need guidance, AFontOTO support responds within 24 hours to assist you.