S12 Pro Wearable Breast Pump - High Efficiency 1.0
Pump Faster, Live Fuller
Not getting enough milk? Leaking all the time? We hear you. After listening to thousands of moms in our community, we created the Momcozy S12 Pro hands-free breast pump — so comfortable and convenient, you might even forget you're pumping.
Designed to feel as soft as your baby’s lips and as gentle as their latch, the S12 Pro features our DoubleFit™ Flange — an upgraded double-layer seal that molds more closely to your breast for stronger suction, fewer leaks, and a pumping experience that just feels right.
Specifications
Material: PP + food-grade silicone
Default Flange Size: 24mm
Flange Insert Sizes: 15 / 17 / 19 / 21 / 27mm
Noise Level: < 45dB
Charging Time: ~130 mins
Usage Time: Up to 240 mins (7–8 sessions)
Charging Port: Type-C (5V/1A)
Capacity: 6 oz (pump within 4 oz)
Auto Shut-Off: After 30 mins
Need a different flange size?
We’ve created a guide to help you find the best fit.
Check the flange size guide here.
Find other flange sizes here.
Note: Breast size can change before and after pumping. Measure just before pumping for accuracy.
Double Wearable Pump Kit
Pump Motor * 2
Milk Collector (180ml) * 2
Silicone Flange (24 mm) * 2
Silicone Diaphragm * 2
Duckbill Valve * 4
Linker * 2
USB Cable * 2
Single Wearable Pump Kit
Pump Motor * 1
Milk Collector (180ml) * 1
Silicone Flange (24 mm) * 1
Silicone Diaphragm * 1
Duckbill Valve * 2
Linker * 1
USB Cable * 1
Fast Shipping FREE AVAILABLE
Order today for delivery in as little as .All Momcozy.com standard shipping rates and policies apply to all items when shipped to the United States, United Kingdom, Canada, Australia, Saudi Arabia, France, Germany, and some EU Countries including free shipping on qualifying orders. For other countries, please get in touch with our customer service before placing the order.
The time frame of order delivery is divided into two parts:
●Processing time: 1-2 business days
●Shipping time: 3-8 days (excluding weekends and holidays).
Click here for more shipping details
30 Days Guarantee Learn more
We stand behind our products. If you don’t love it, exchanges and returns are available in 30 days.30-Day No-Reason Return Policy
Momcozy offers a 30-day no-reason return policy for unused and unopened products with intact packaging. Returns must include all original accessories and proof of purchase. Customers are responsible for return shipping costs, and original shipping fees are non-refundable. Clearance items and non-Momcozy branded products are excluded from this policy.
Exchange Policy
Non-Quality Issues: Within 30 days of receipt, unused products may be exchanged for reasons such as size mismatch, with the return shipping cost to be borne by you.
Quality Issues: If a product is damaged due to quality issues within the warranty period, please contact our customer service team for assistance. They will provide you with a solution that best suits your needs.
If you have any problems or malfunctions during use, please contact us at support@momcozy.com, and please allow up to 24 business hours for a response to your question.
Click here for more return&exchange details
1 Year Warranty Learn more
At least 1 Year* Warranty Guarantee PolicyAt Momcozy, we want you to feel confident in your purchase. That's why we offer a 1-year warranty (2 years in the EU) on most battery-operated products. The warranty covers failures caused by non-human factors, such as manufacturing defects or internal malfunctions under normal use. Simply keep your proof of purchase and contact us if you experience any issues within the warranty period. We'll work with you to find a solution, whether it's a repair, replacement, or refund.
Some exclusions apply, such as damage caused by misuse or unauthorized modification. For more details, please see our full warranty policy.
Ways to Pay




PRODUCT FEATURE


Pump Closer. Pump Better.
Pump more. Hurt less. Leak nothing.
With an upgraded DoubleFit™ Flange featuring a double-layer seal, the S12 Pro wearable breast pump fits more closely and securely to your breasts, helping you express more milk, more comfortably, and with less leakage.
As soft as your baby’s lips and as gentle as their latch, the S12 Pro offers a barely-there feel and a spa-like pumping experience moms love.
Long Battery Life
The S12 Pro portable breast pump fully charges in just 130 minutes, providing up to 7–8 pumping sessions (about 240 minutes)—enough to keep up with your busy day, whether you’re at home or on the go.
Made with BPA-free, food-grade silicone, it’s safe for both you and your baby.




Pump Whenever, Wherever
Hands-Free. Worry-Free.
No wires, no limits. This bra-fit wearable breast pump lets you pump freely on the go—whether multitasking or moving your body to exercise. It’s the perfect shortcut for moms to balance nursing and reclaim their daily lives.
Effortless Pumping
The upgraded 3 modes — Stimulation, Expression, and Mixed — mimic your baby’s natural suckling to help increase milk letdown. Each mode offers 9 adjustable levels to perfectly suit your breast.
The large LED screen is easy to read at a glance, even in the dark. Plus, the satisfying snap-on click when attaching the milk cup lets you know it’s securely locked in place—helping prevent leaks and giving you peace of mind.
Not sure about your flange size? Check out our exclusive guide.




Leakless Pumping Starts with the Right Bra
You need a pumping bra—not just any bra—if you notice these three signs:
1. Your breast pump keeps shifting around.
2. You experience frequent leaks.
3. It’s difficult to insert or remove the pump from your bra.
Our pumping bra offers extra support to lift and snug your breasts securely, preventing leaks. It also stretches to accommodate fluctuating breast sizes and your pump’s shape, ensuring a comfortable, leak-free pumping experience every time.
That’s why a dedicated pumping bra—especially Momcozy’s—is essential for hassle-free pumping.
Buy the Bundle >
AS SEEN ON YOU
FAQs
1. Ensure the breast pump and accessories are correctly installed, and the flange fits your breast properly during pumping.
2. Select the correct flange size. (Momcozy offers 15mm, 17mm, 19mm, 21mm, and 27mm sizes on the website. Check here.
3. Use the included nipple measuring tool to measure your nipple size. Be sure to measure only the nipple diameter, not including the areola.
4. Replace silicone accessories approximately every 3 months or as needed based on the pump’s installation and suction performance.
Recommended bra styles include full-coverage bras, stretch fabrics, nursing bras with clasps, or wireless bras for better support and comfort.
Before Purchase:
We offer an exclusive size guide to help moms find the right flange size. Check out the guide to learn how to measure your flange accurately.
After Purchase:
Use the included nipple measuring tool in the package to measure your nipple size and select the correct flange accordingly.
Please Note:
Breast size can change before and after pumping, so be sure to measure your flange size right before pumping to ensure the best fit.
All Momcozy pump parts that come into contact with breast milk are BPA-free, ensuring your baby’s milk stays safe and pure.
To maintain optimal pump performance, some accessories need regular replacement. If you notice a decrease in suction, check your parts—especially the valves—for signs of wear, fraying, or stretching, and replace them as needed.
Diaphragms, duck valves, and inserts are recommended to be replaced every 2–3 months.
Flange shields and milk collectors should be replaced every 6 months.
Many insurance plans cover breast pumps, but coverage for wearable breast pumps may vary. Some providers consider them a secondary pump and may place certain limitations on coverage.
To confirm what’s included in your plan, we recommend reviewing your insurance policy or contacting your provider directly.
Momcozy partners with leading DME providers to help you access a wearable breast pump through insurance, often at little to no cost to you.
A wearable pump does not decrease milk supply, as long as it provides strong and effective suction. Suction strength is key to fully emptying the breast, which helps maintain a healthy milk supply.
Wearable pumps like the Momcozy S12 Pro are designed with high suction power to ensure efficient milk removal, so you can pump hands-free without compromising your milk production.