
Find your flange fit. Pump with confidence.
When it comes to wearables, sizing is different — you'll need a fit that's more snug. Most moms find that adding 1-3mm to their nipple size (or 0-2mm if you're pumping with Eomma 360) results in optimal output and comfort.
Measured Nipple Size | Eomma Recommended Size Flange / Insert |
---|---|
9-11mm | 13mm insert in 24mm flange |
12-13mm | 15mm insert in 24mm flange |
14-15mm | 17mm insert in 24mm flange |
16-17mm | 19mm insert in 24mm flange |
18-20mm | 21mm flange |
21-23mm | 24mm flange |
24-26mm | 27mm flange |
Sizing inserts can only be used with a 24mm flange or 24mm container insert.
How To Find Your Nipple Size

Step 1: Get a measuring tape
Measure the diameter of your nipple at its base while erect to determine its size accurately.

Step 2: Consider sizing up
Most moms find that adding 1-3mm to their nipple size results in optimal output and comfort.

Step 3: Take a look at our chart
Match your measurements to our sizing chart to find your recommended size flange / insert.

Frequently Asked Questions
The Eomma 360 runs for up to 3 hours on a full charge under normal use. A full charge takes approximately 2 hours.
The Eomma 360 operates at less than 45dB, making it one of the quietest pumps available
Yes, once properly secured in your nursing bra, you can move freely while pumping.
Yes, the Eomma 360's slim design fits discreetly under loose-fitting clothes and can be worn during daily activities.
The Eomma 360 comes with 24mm and 21mm flanges. Additional sizes (19mm and 28mm) are available for purchase separately on the website
If you experience discomfort or see excess areola tissue being pulled in, you may need a different size. Your nipple should move freely in the tunnel without rubbing, and minimal areola should be pulled in.
Yes, with our range of flange sizes (21mm-32mm), the Eomma 360 accommodates various nipple sizes. If you're unsure about sizing, we have a sizing guide on our website or contact our support team.
Discomfort usually indicates either incorrect flange size or suction level. Start with a lower suction and gradually increase to find your comfort level. The Eomma 360's app lets you save your preferred settings once you find them.
Download the Eomma app, create an account, and follow the simple pairing instructions. Your pump connects via Bluetooth.
The app tracks: pumping duration, milk volume, pumping schedule, session history, and custom pump settings.
All parts that come in contact with milk should be cleaned after each use with warm soapy water and air dried. All parts except the motor unit are dishwasher safe (top rack).
We recommend replacing: flanges every 3-6 months, valves every 2-3 months, and collection bottles as needed.
The pump should sit securely in your nursing bra. Ensure the flange is centered over your nipple and the collection container is properly aligned.
Any nursing bra with good support works well. We recommend a pumping bra or nursing bra with some stretch for the most comfortable fit.