Quick Answer

Flange inserts are silicone adapters that reduce the tunnel diameter of a standard 24mm flange, giving you a smaller, more precise fit. Standard flanges are one-piece rigid plastic or silicone parts available in fixed sizes. For most moms, inserts offer a more affordable way to dial in fit without buying multiple flanges.

What Are Flange Inserts and Standard Flanges?

Standard flanges are the funnel-shaped breast shields that come with your pump. They are typically made of hard plastic or silicone and are available in fixed diameters (commonly 21mm, 24mm, 27mm, and 30mm). Your nipple should move freely inside the tunnel without rubbing the sides. If the fit is off, you may experience discomfort or reduced output.

Flange inserts are thin, flexible silicone rings that sit inside a standard 24mm flange. They reduce the effective tunnel size to a smaller diameter—such as 15mm or 19mm—so you can achieve a better fit without buying a whole new flange. BabyBuddha offers inserts in 15mm and 19mm sizes for their wearable pump and 24mm flanges.

Fit and Comfort: Why Size Matters

Proper flange fit is one of the most overlooked factors in pumping efficiency. A flange that is too large can pull in areolar tissue, causing pain and poor drainage. A flange that is too small can pinch and restrict milk flow. Flange inserts solve this by giving you a custom-like fit from a standard 24mm opening.

The 15mm and 19mm flange inserts from BabyBuddha are designed to reduce friction and improve nipple alignment. This can lead to more effective milk removal and less discomfort during longer sessions. Standard flanges, on the other hand, require you to buy a separate flange for each size you want to try, which adds cost and inventory.

Cost and Convenience Comparison

A pair of BabyBuddha flange inserts costs around $9–$13, depending on the size. A standard flange set often costs $15–$30 or more. If you are unsure of your size or your size changes postpartum, inserts let you experiment affordably. The trade-off is that inserts add one more piece to clean and assemble, and they are only compatible with 24mm flanges.

Trade-Offs at a Glance

  • Fit Precision: Inserts let you fine-tune fit in 15mm or 19mm increments. Standard flanges require buying a new flange for each size. Inserts win for adjustability.
  • Cost: Inserts cost $9–$13 per pair. Standard flanges cost more and you may need multiple sizes. Inserts are budget-friendly for trial.
  • Cleaning & Assembly: Inserts add one extra silicone piece to wash and assemble. Standard flanges are simpler with fewer parts. Standard flanges are simpler for daily use.
  • Compatibility: Inserts only work with 24mm flanges. If your pump uses a different size, inserts won't fit. Check your flange size first.

Product Facts

  • Flange Inserts – 15mm (2-pack) for Wearable Breast Pump and 24mm Flanges: 15mm Flange Inserts designed to help moms achieve proper alignment, improved comfort, and optimized milk expression when using BabyBuddha pumps. Soft, flexible design for a comfortable fit. If you measure 15mm across your nipple, these inserts give you a precise fit without buying a new flange. The soft silicone reduces friction during pumping.
  • Flange Inserts – 19mm (2-pack) for Wearable Breast Pump and 24mm Flanges: 19mm Flange Inserts designed to help moms achieve proper alignment, improved comfort, and optimized milk expression. Helps improve comfort and reduce friction during pumping. For nipples measuring around 19mm, these inserts offer a snug, comfortable fit inside a standard 24mm flange. They support better nipple alignment for more effective milk removal.

Which Should You Choose?

Best For

  • Moms who measured 15mm or 19mm nipple diameter and want a precise fit without buying new flanges
  • Moms who experience discomfort or friction with standard 24mm flanges
  • Budget-conscious pumpers who want to try a smaller size affordably

Not For

  • Moms who already own the correct size standard flange and are happy with the fit
  • Moms using flanges smaller than 24mm (inserts won't fit)
  • Anyone who prefers a one-piece design with fewer parts to clean