MomMed S21 Breast Pump-Gentle Expression, Effortless Emptying
Key Features
- Gentle Expression, Effortless Emptying
- Pump Weight: 230g
- Product Dimensions: 122 mm x 110 mm x 68 mm
- 3 Modes: Stimulation/Expression/Auto Mode for customized use
- 12 Levels: Adjustable intensity for precise comfort
- Suction Strength: Hospital-grade, up to -280mmHg per side
- Auto Shut-off Time: 30 minutes
- Usage Time: 150 mins / 5-6 sessions
- Charge Time: About 2 hours (compatible with 5V 1A adapter)
- Noise Level: Under 45dB
- Display: LED screen
- Capacity: 6oz leak-resistant cups
- Cleaning: 4 parts, dishwasher safe (under 90°C/194°F)
- Certification: Mom tested & FDA approved
We have such a guide exclusively to solve this problem of moms, you can check the guide on how to measure your flange size.
What's included
- 2 MomMed S21 Pumps
- 2 USB Cables (Type-C)
- 2 Milk Containers (6 oz)
- 2 Silicone Flanges (24 mm)
- 6 Flange Inserts (2 each of 17mm, 19mm, and 21mm)
- 4 Silicone Diaphragms
- 6 Duckbill Valves
- 10 Milk Storage Bags
- 1 Nipple Ruler
- 2 Nursing Bra Extenders
- 1 Breastfeeding Guidebook
- 1 User Manual
Find more S21 accessories here
Master Breastfeeding in 3 Easy Steps:
MomMed LuxerFlow™ Technology
New S21 Series - Data-Driven Excellence
"Engineered through clinical insights from 10,000+ nursing mothers, our LuxerFlow™ system delivers optimized expression rhythms that match natural feeding patterns. Clinically proven to achieve 45% greater milk output compared to standard pumps."
Gentle Expression
Biomechanical Comfort Redefined
"Our hospital-grade soft silicone cushions and precision vacuum pump work in harmony to replicate an infant's natural suckling motion (45-220 mmHg range). Experience zero discomfort while maintaining peak milk flow efficiency."
Effortless Emptying
Complete Drainage, Maximum Output
"The Dynamic Vacuum Algorithm intelligently alternates between stimulation and expression phases, achieving 98% milk drainage efficiency - 35% faster than conventional pumps."
For Your Milk, For Your Well-Being
Holistic Pumping Philosophy
"Beyond milk collection, we champion maternal wellness through precision-engineered customization: 3 Smart Modes × 12 Micro-Adjustable Levels = 36 Personalized Expression Programs."
Global Safety Assurance
Certified Protection System
"Multi-layered safety standards validated through:
✓ FDA 510(k) Cleared Medical Device
✓ CPC Child-Safe Material Certification
✓ BACL International Lactation Compliance
✓ ISO 13485 Quality Management System"
Safety Commitment:
- Triple Validation Process (Material/Electrical/Biological)
- 2000+ Hour Endurance Testing
- 24/7 Pump Performance Monitoring
Here's How We Compare
Frequently Asked Questions
How do I assemble and clean the MomMed S21 Breast Pump?
To assemble the MomMed S21 wearable breast pump, align all parts securely as shown in the user manual. Make sure the silicone flange and diaphragm are properly seated. For cleaning, disassemble all washable parts and sterilize with boiling water or a sterilizer. Avoid washing the motor unit. Proper cleaning ensures optimal suction and hygiene.
Is the S21 breast pump hospital-grade and safe for exclusive pumping?
Yes! The MomMed S21 is a hospital-grade double electric breast pump with powerful suction up to 280mmHg. It's designed for both occasional and exclusive pumping moms, offering adjustable suction modes to fit your comfort and milk flow needs.
Can I use the S21 while working or on the go?
Absolutely! The S21 is a hands-free, wireless breast pump designed for busy moms. With its quiet motor (≤45 dB) and wearable design, it fits discreetly in your bra so you can pump anywhere—at work, in the car, or even while doing chores.
How long does the battery last and how do I charge it?
The MomMed S21 breast pump comes with a built-in rechargeable battery that lasts up to 5–6 pumping sessions per full charge. Use the included USB charging cable and allow approximately 2 hours for a full charge. Always charge before first use.
Does the MomMed S21 come with different flange sizes?
Yes, each S21 wearable pump includes a 24mm flange and three insert sizes (17mm, 19mm, and 21mm) to ensure a comfortable fit. A proper flange fit helps improve milk output and prevents nipple soreness. Not sure about your size? Use our sizing guide or consult with a lactation expert.
What are the suction modes and how do I use them?
The S21 has 3 modes—Stimulation, Expression, and Auto—each with 12 adjustable levels. Start with Stimulation Mode to stimulate letdown, then switch to Expression Mode to collect milk. The Auto Mode mimics a baby's natural suckling rhythm. Customize the settings to find your ideal comfort and efficiency.
Is the MomMed S21 BPA-free and safe for my baby?
Yes, all components that come in contact with breast milk are made from BPA-free, food-grade materials. Your baby’s safety is our top priority.
What are the differences between MomMed S21 and MomMed S10 Pro?
S21 Breast Pump: The S21 breast pump offers unmatched convenience for on-the-go nursing mothers with its compact design and advanced features. It has an LED screen and physical buttons for durability, operates quietly at less than 45 dB, and provides 3 modes and 12 intensity levels. With a long battery life for 4-6 sessions, a 6oz capacity, and a 105° ergonomic flange, the lightweight and comfortable S21 ensures discreet and efficient pumping anytime, anywhere.S10 Pro Breast Pump: The S10 Pro breast pump is perfect for mothers with high pumping needs, offering efficient milk expression and personalized settings. It features a large capacity, extended battery life for 6-8 sessions per charge, and 3 modes with 9 intensity levels. The 105° ergonomic flange ensures a comfortable fit for most breasts, while the wider display with an embedded timer adds convenience for all-day use.