Finding the right size

Finding the Right Flange Size

Using an incorrect flange size is one of the main causes of discomfort, pain, or even damage while pumping. A proper flange fit ensures better comfort, seal, and milk flow.

Why Might You Need a Different Flange?

Despite various nipple shapes (e.g., inverted, flat, long), most pumps only allow you to adjust the tunnel diameter. They don’t account for nipple elasticity or texture, which may require a different fit. 

Signs Your Flange May Be Too Small

• The nipple doesn’t move freely in the tunnel.
• Indents on the nipple or near it.
• Pain or chafing on the nipple.
• Persistent fullness in the breast after pumping.

Signs Your Flange May Be Too Large

• Areola is drawn into the flange.
• Swelling or soreness around the areola.
• Poor suction, resulting in leaks or inconsistent suction.
• Longer time to start milk flow or persistent fullness after expressing.