Opgroeie 4PCS 21mm Flange Inserts — 24mm Shield Compatibility for Momcozy, Spectra, Medela & More

Personalize your pumping experience with Opgroeie 21mm flange inserts

Finding the right flange size matters for comfort and efficiency during pumping. Opgroeie's 4PCS 21mm flange inserts are designed to slot into standard 24mm shields, expanding compatibility across popular pump models, including Momcozy M5/M6/M9, S12 Pro, S9 Pro, V1 Pro, V2 Pro, Spectra, Medela, Elvie, and more. The inserts are crafted from food-grade silicone—soft to the touch with rounded edges that glide smoothly against skin. They are BPA-free and dishwasher safe, and the package includes a sponge cleaning brush for quick post-use cleaning. For ongoing performance, consider replacing the inserts every two months.

Two inserts are included for fast, on-the-fly adjustments. When your pumping routine shifts—travel, morning rush, or a need for more comfort—you can swap in a 21mm piece without changing your shield. The result can be a snug seal and stable suction that feels gentler over time, especially during longer sessions.

Key advantages at a glance

• Compatibility across brands: Fit standard 24mm shields, working with Momcozy, Spectra, Medela, Elvie, and more. Note: not compatible with 27–28mm shields.
• Two 21mm inserts: Quick, affordable customization to achieve a comfortable fit.

Easy, everyday use and care

• Easy to install and remove from 24mm flanges for fast adjustments.
• Food-grade silicone, BPA-free, and dishwasher safe for simple cleaning; sponge brush included for crevices.

Care tips: start with a clean shield and inserts, rinse after each use, and air-dry completely. When in doubt, hand wash to preserve the silicone's softness. To maintain optimal performance and fit, plan to replace the flange insert every two months—this habit supports consistent pumping experience over time.

Who benefits from these inserts

New moms evaluating size options, caregivers assisting with pumping, or anyone who wants a flexible, non-invasive way to tailor fit without purchasing new shields may find these inserts valuable. A 21mm profile can complement a variety of pumping scenarios, from home sessions to travel days, offering a smoother, more comfortable feel for many users.