Maymom 20 mm Flange Insert – Elvie/Medela Shield Compatible, BPA-Free Silicone

Overview

The Maymom 20 mm flange insert is a compact silicone adapter that helps you convert a 24 mm shield to a 20 mm opening. This accessory is designed for wide compatibility, including Elvie shield systems (not original replacement parts) such as the Elvie Single/Double Electric and the 24 mm Elvie Stride Cup, plus many 24 mm cups from other brands.

Real-world use and feel

In everyday pumping, comfort and fit matter. By placing the 20 mm insert inside a 24 mm detachable shield, you create a snug tunnel that can support a smoother shield-to-nipple transition. The result is a versatile option that may reduce rubbing and skin irritation during longer sessions.

Compatibility highlights

• Elvie 24 mm shield family (including Elvie Single/Double Electric and Stride Cup) with 24 mm cup
• Medela PersonalFit Flex 24 mm shield
• Motif Luna 24 mm shield
• Ameda Mya / Mya Pro 24 mm shield
• Momcozy S9, S10, S12 24 mm cups
• LegendaryMilk 24 mm cup
• Tsrete wearable silicone 24 mm cups

Fit, versatility, and care cues

• Snug, trim-free fit means you don’t need to cut the insert for most applications
• Available in sizes 13–21 mm to accommodate varying needs
• BPA-free, food-contact grade silicone designed for repeated use
• Maintains compatibility with most handsfree bras when installed inside a 24 mm shield

Available sizes: 13, 14, 15, 16, 17, 18, 19, 20, 21 mm. The insert is made from BPA-free, food-contact grade silicone, chosen for a gentle touch and durability in daily use. It remains compatible with most handsfree bras when placed inside 24 mm detachable shields.

Usage ideas

This insert is designed for flexibility across brands and setups, helping you tailor shield sizing without changing your entire pumping workflow. If you occasionally find a 24 mm shield too wide, the 20 mm option can offer a more personal fit while preserving the benefits of your existing 24 mm system.