S12 Pro Wearable Breast Pump KMRV

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.

⚠️ Safety Warning

Do NOT use this device if you have a cardiac pacemaker, implanted defibrillator, or any other metallic or electronic implant, as it may cause electromagnetic interference or serious injury.

Product Features

• Pump more. Hurt less. Leak nothing.: Pump Closer. Pump Better. 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.
• Hands-Free. Worry-Free.: Pump Whenever, Wherever 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 >

Feature

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.

What’s included

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

ref KMRV