Hranio Flange Insert 17mm – 8pcs | Sizing Kit for Spectra & More

The Hranio Flange Insert 17mm 8pcs is designed to grow with you. This compact sizing kit centers on a 17mm insert that helps you adapt as your lactation needs shift, while staying compatible with most 24mm flanges from popular pump brands. If you’ve ever felt a flange that’s too tight or too loose, this set invites you to experiment with comfort while you pump.

What you’ll experience with the right size: a calmer pumping session, reduced pressure points, and the possibility of more comfortable expressing sessions. The kit is built to support changing sizing needs without forcing a single fit.

What’s included

• Flange Insert 17mm 8pcs: eight silicone inserts designed to reduce a 24mm flange to a 17mm size for a more tailored fit.
• Compatibility across brands: works with 24mm flanges for many major pumps, including Spectra, Momcozy, Medela, Willow, Elvie, and more (not for 27mm shields).
• BPA-free: made from food-grade silicone; parts that contact breast milk are BPA-free for reassurance.
• Easy cleaning: rinse and wash with warm soapy water after each use; can be sanitized by boiling or steaming at around 100°C (212°F).
• Size-change reminder: monitor the nipple during pumping; if rubbing or squeezing occurs, consider swapping to a different insert size.

Why size matters

The size of the flange insert is more than a number—it can influence how comfortably you pump and how efficiently milk is expressed. A snug yet gentle fit may help you maintain a relaxed posture and a steady flow, especially as nipple swelling occurs during pumping sessions.

Material and safety

• Safe silicone: the inserts are BPA-free and designed for repeated use in a baby-friendly material.
• Care instructions: wash after use and sanitize via boiling or steaming when needed to maintain hygiene.

Care and usage tips

• Observation: watch for rubbing or tightness in the flange channel—this signals a need to switch size.
• Combination use: try pairing the 17mm insert with different 24mm flanges to find your best fit across stages.

Real-life scenarios

Many moms experience changes in nipple size as lactation progresses. This kit offers a practical path to maintain comfort during pumping sessions without changing your pump hardware. It’s especially helpful during days when skin sensitivity is high or when your supply needs a slightly different fit due to swelling, fatigue, or positioning changes.

Brand compatibility aside, this sizing kit is meant to be a flexible helper—not a guarantee of performance. Many users report smoother sessions when fit is correct, and this kit provides options to explore what feels best for you.