







Momcozy S12 Wearable Electric Breast Pump
Save 15% off on S12/M1 Pumps, Use Code: MM15
Take Some Time to Relax While Pumping
Pump wherever, whenever with your own hands free breast pump. No messy or tangled cords to hold you back or get in the way, wearable pump that takes care of your breastmilk supply while you take care of other things.
LCD Display
Default Flange Size: 24mm
9 Adjustable Levels & 2 Modes
Bottle capacity: >120ml
Silent: Noise less than 50dB
Usage time: 70-90 minutes
Shut time: 30 minutes auto shut off
Safe material, food-grade silicone
Charge time: about 2.5 hours, power adapter must be 5V-1A or 5V-2A
Nipple measurement | Flange |
---|---|
11-13mm | 17mm |
14-16mm | 19mm |
17-19mm | 21mm |
20-22mm | 24mm |
23-25mm | 27mm |

Hands Free
Be Free and More Productive
Worn inside a standard nursing bra, so you can pump completely hands-free anytime, anywhere. A better way to pump at home, at work, or on the go.
2X smaller size, 2X less visibility. A great reduction of space occupation in bra and weight burden on breast

Convenient
Visual & Quiet Design
Compared with the touch screen, the physical buttons have a longer service life. The visual screen will let you know the working status of your breast pump at any time. The sound is less than 50 dB when used, and won't disturb a sleeping baby.

Move Around
Portable and Easy to Charge
Lightweight and portable breast pump, and 1000 mAh capacity rechargeable battery. You can pump milk anywhere at anytime. After fully charged, it can be used for about 90 minutes, or 3-4 times.

Easy to Assemble
Easy to Use and Clean
The wearable breast pump has a capacity of 180ml, the container is marked with a tick mark. The recommended optimal breast pumping volume is 120ml. Takes less than a few seconds to put a wearable pump inside your bra and start milking. With only 5 parts to clean afterwards.
Frequently asked questions
At Momcozy, we provide a breast pump flange size chart for you. You can find the correct size through the chart.
Momcozy's default flange size is 24mm, and 17mm/19mm/21mm inserts and 27mm flange size are also available for purchase. You can purchase it here
Your breasts may change between the third trimester and after giving birth. Also, your breasts may change through your breast pumping journey, so it's important to regularly check your flange size.
Unsure of your size? Check out our exhaustive guide on how to measure your flange size
Our hands-free breast pump is designed to be worn with your standard nursing bra. For a better pumping experience, make sure there is no space between the breast pump and your breast, and it cannot be moved easily.
If your bra isn't flexible enough, you can use a bra adjuster to create more room.You can find Momcozy's nursing bras here
* Washable parts:
Valve/Linker/Diaphragm/Flange/Milk Collector
1. Rinse all separated parts that come in contact with breast and breast milk in 25-30 °C (77-86 °F) water to remove breast milk residue.
2. Once rinsed, parts that have touched the breast or breast milk should be placed in a clean wash basin used only for washing infant feeding equipment.
・Soak all washable parts in 40-60 °C (104-140 °F), soapy water for 3~5 minutes.
・Wash each part with a clean dishcloth or soft brush.
・Rinse all separated parts with clear water.
3. Place parts on a clean surface or towel.
・Allow all parts to air dry.
・Store dry parts in a clean, cool place when not in use.
・Do not store wet or damp parts.
Caution: Only use drinking-quality water for cleaning.
Some breast pump accessories do need replacing regularly to maintain performance. If you notice that your pump seems to have lost suction, the first thing you should do is take a look at your parts, particularly the valves, and inspect for wear, fraying, or stretching and replace if needed.
1. Valve membranes and duck valves need to be replaced every 2 months;
2. Backflow protector diaphragms need to be replaced every 3 to 6 months
3. Replace breast shields every 6 months
AS SEEN ON YOU
