LOTBILL Flange Insert 13/15/17/19/21mm – 10pcs for Wearable Pumps (24mm Shield Downsize)

LOTBILL Flange Insert Kit: 13–21mm Sizes for Wearable Pumps

Finding the right flange size can make a noticeable difference in comfort and pumping efficiency. The LOTBILL Flange Insert set provides five common sizes (13, 15, 17, 19, and 21mm) in a single, reusable package, designed to work with popular wearable pumps such as Momcozy S12 Pro/S9 Pro/S12/S9/S10, Medela, Spectra, Willow, and Elvie. Note: this insert set is not intended for 27mm or 28mm shields.

Made from food-grade silicone and BPA-free, the inserts are soft to touch against the skin while staying close to your body to guide milk flow. The materials are gentle on delicate skin and the inserts are reusable, making them a thoughtful option for moms exploring size options without a large one-time investment.

Why the Right Size Matters

Professional lactation guidance often emphasizes that nipple size and pumping comfort can vary. This kit aims to save you time and energy by offering accurate sizing options that fit a range of pumping sessions. While results vary, many users find the right size reduces friction and supports a smoother pumping experience.

What’s Included and How to Use

• Five sizes: 13, 15, 17, 19, and 21mm to cover common ranges
• Reusable, BPA-free silicone for skin-friendly contact
• Designed to fit snugly against the skin and accommodate a 24mm shield when downsizing

• Nipple-size measuring tool helps you choose the correct insert
• Includes a sponge cleaning brush for quick care between sessions
• Easy to sterilize: steam, boiling water, or microwave steam bags

Care, Cleaning and Maintenance

• Sterilize before first use and between uses
• Wash with mild soap and rinse in clean water
• Pat dry and store in a clean, dry place
• Replace pump accessories roughly every 2 months for optimal function

Real-World Scenarios

• Traveling moms can switch sizes on the fly for comfort
• Evening or night pumping with a tighter seal may feel gentler on sensitive skin
• Day-to-day pumping with a more precise size can reduce discomfort and support steady milk expression

Note: This product is intended to improve subjective comfort and fit. Individual results will vary, and this kit does not guarantee specific outcomes.

Choosing the right flange size is a practical step toward comfortable, efficient pumping. LOTBILL supports moms with a flexible, reusable option that adapts to changing needs without locking you into a single size.