Quick answer
The Willow Sync Flange Set 24mm is a replacement accessory designed for a comfortable, secure fit. To get the best results, you need to confirm your nipple diameter and follow a simple sizing process.
Why flange size matters
Using the correct flange size is critical for both comfort and milk output. A flange that is too small can pinch and cause pain, while one that is too large can pull in too much areola, leading to friction and reduced efficiency. The 24mm size is a common starting point, but individual anatomy varies.
How to measure for the 24mm flange
Measure your nipple diameter at the base (not the tip) after a few minutes of pumping or when it's erect. Use a ruler or a sizing card. The flange tunnel should be about 1-2mm larger than your nipple. If your nipple measures 22-23mm, the 24mm flange is likely a good fit.
Step-by-step flange fit check
- 1. Measure your nipple: Using a ruler or sizing kit, measure the diameter of your nipple at the base after a few minutes of pumping. Write down the measurement in millimeters. A common mistake is measuring before pumping; your nipple can change size.
- 2. Choose the right size: Compare your measurement to the flange size. For the 24mm flange, your nipple should measure between 22mm and 23mm. If it's larger, you may need a 28mm flange; if smaller, a 21mm or 17mm size. Don't guess—use the measurement. A 24mm flange is not one-size-fits-all.
- 3. Check fit during pumping: Place the flange against your breast. During pumping, your nipple should move freely in the tunnel without rubbing the sides. Only your nipple should be pulled in—not the areola. If you see areola being pulled in, the flange is too large. If your nipple rubs the sides, it's too small.
- 4. Adjust as needed: If the fit isn't right, try a different flange size. Willow offers a sizing kit and various flange sizes to help you find the perfect fit. The 24mm set is a common size, but comfort is the top priority. A poor fit can reduce milk output and cause discomfort. Don't force a size.
Product facts
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Willow Sync Flange Set 24mm (2-pack): The Willow Sync Flange Set 24mm is a two-pack replacement accessory designed for a comfortable and secure fit with Willow wearable breast pump systems. Having a spare flange means you can swap between sessions without waiting for one to dry, keeping your pumping routine efficient.
Willow Sync Flange Set 24mm (2-pack)
