Choosing the best breast pump for small breasts can feel overwhelming, especially when comfort and efficiency are top priorities. For moms with smaller breasts, finding a pump with proper flange sizing, adjustable suction, and a design that accommodates unique needs is critical. This article compiles authentic insights from real user experiences, expert reviews, and detailed product comparisons to guide you toward the best breast pump for your breastfeeding journey. From wearable to hospital-grade options, we’ll explore top choices, their pros and cons, and practical advice to ensure you make an informed decision.
Why Flange Size Matters for Small Breasts
The most important thing to remember is that you can have the best breast pump in the world, but if you’re uncomfortable or stressed, your body is likely to release less milk, so staying relaxed is key. For moms with small breasts, the flange (or breast shield) size is critical for comfort and effective milk expression. A flange that’s too large can cause pain, reduce milk output, and even damage nipple tissue. Most pumps come with standard 24mm or 28mm flanges, but smaller breasts often require 15mm, 17mm, or 21mm sizes. Expert Midwife Darcey says, “I can’t stress enough how important the right breast shield size is – it’s key for comfort and getting the most milk!”
How to Measure for the Right Flange Size
- Measure your nipple diameter (not including the areola) using a ruler or a nipple sizing tool like the Momcozy Nipple Ruler.
- Choose a flange that’s 2-3mm larger than your nipple to allow for movement during pumping.
- Test the fit: Your nipple should move freely in the flange tunnel without rubbing or pulling surrounding tissue.
- Consult a lactation specialist if you’re unsure, as improper sizing can lead to discomfort or reduced milk supply.
Top Breast Pumps for Small Breasts
Below, we highlight the best breast pumps for small breasts based on comfort, efficiency, and compatibility with smaller flange sizes. Each product has been tested by real moms and evaluated for performance in various scenarios.
Spectra S1 Plus Hospital Strength Breast Pump
The best breast pump is the Spectra S1 Plus Hospital Strength Breast Pump, according to more than 2,100 moms who praise its efficiency, comfort and ease of use. She says that the Spectra S1 was by far her favorite. “The Spectra pumped milk extremely efficiently,” she says. “In just 15 minutes, I could express up to 5 ounces per breast, while with other pumps I’d get maybe half that amount.” Plus, she says, the Spectra was easy to use, fit comfortably and was easy to clean. Many moms in the What to Expect Community agree with Christine — in fact, Spectra took the honor of the Best Breast Pump in the 2025 Mom-Must Have Awards and 2025 Feeding Awards, What to Expect’s 100 percent community-driven awards series.
- Pros: Hospital-grade suction (up to 320 mmHg), adjustable settings, quiet operation, closed system for hygiene, portable with rechargeable battery.
- Cons: Heavier at 3.3 pounds, tubes can detach during use, slightly bulky for travel.
- Flange Sizes: Includes 24mm and 28mm; compatible with 15mm, 17mm, 21mm inserts via Nenesupply or Pumpin’ Pals.
- Price: Check on Amazon.
Medela Freestyle Hands-Free Breast Pump
For comfortable and convenient pumping, the extra lightweight Medela Freestyle Hands-Free double electric wearable breast pump is a popular choice. Each Move breast pump includes three comfortable and flexible funnel inserts in varying sizes (15mm, 17mm and 21mm). A double pump is a great way to express from both breasts simultaneously, and this hands-free one from Medela works fast. “I could pump a few bottles’ worth within 15-20 minutes,” said one tester. Panellists also praised this pump’s efficiency. It has two large collecting chambers to make sure every precious drop is saved, and it scored full marks for how easy it was to pour the milk into a bottle.
- Pros: Lightweight (0.5 pounds), app connectivity for tracking, quiet motor, hands-free design fits in bra.
- Cons: Complex assembly with six parts per side, potential for leaks if not sealed properly, higher price point.
- Flange Sizes: Includes 15mm, 17mm, 21mm inserts; 24mm standard.
- Price: Check on Amazon.
Elvie Stride Plus
The Elvie Stride Plus is a hands-free breast pump designed for moms seeking powerful performance combined with convenience. With suction up to 280 mmHg and customizable suction and speed settings, this pump ensures effective milk expression with ease. The Elvie Stride Plus allows you to pump discreetly with its ultra-quiet noise-reduction technology; this quiet operation ensures you can pump discreetly at work without drawing attention. Designed with comfort in mind, it includes breast shields in sizes 21 mm and 24 mm, with additional sizing options available.
- Pros: Ultra-quiet (40 dB), wearable in-bra design, app for real-time tracking, long battery life (3 hours).
- Cons: Less efficient (0.12 oz/min vs. 0.45 oz/min for BabyBuddha), expensive, only one flange size included.
- Flange Sizes: 21mm, 24mm included; 15mm, 17mm available separately.
- Price: Check on Amazon.
Momcozy All-In-One M5 Wearable Breast Pump
The Momcozy All-In-One M5 was the most comfortable breast pump I tested, and it provided the highest milk removal yield thanks to its “baby mouth” lifelike suction. I tested this pump because it was suggested to me by several moms as a simple, effective and comfortable option. I also like that it’s a fully in-bra option and comes with a carrying case to help me stay organized.
- Pros: Lightweight (0.5 pounds), lifelike suction, affordable, includes carrying case.
- Cons: No app connectivity, not dishwasher-safe, limited to 24mm flange with inserts.
- Flange Sizes: 17mm, 19mm, 21mm, 24mm inserts included.
- Price: Check on Amazon.
Lansinoh Discreet Duo Wearable Breast Pump
Lansinoh Discreet Duo checks all those boxes (and more!), earning it a place as our Best of The Bump winner for overall best wearable breast pump. Not only was this one of the most comfortable breast pumps I’ve ever used, with no discomfort even on the higher power settings, it also yielded the same amount of milk I get from my standard electric breast pump! Assembling the Lansinoh Discreet Duo was straightforward. Some wearable pumps can be fiddly, since you need to line them up just right to ensure they’re properly sealed to avoid leaks (moms call breast milk liquid gold for a reason!).
- Pros: Comfortable even at high settings, easy assembly, comparable output to standard pumps, includes storage bags.
- Cons: Only 24mm flange included, battery life shorter than competitors, slightly louder (42 dB).
- Flange Sizes: 24mm standard; 15mm, 17mm, 21mm inserts available.
- Price: Check on Amazon.
Comparison Table of Top Breast Pumps
| Model | Suction Strength | Flange Sizes | Weight | Battery Life | Noise Level | Price |
|---|---|---|---|---|---|---|
| Spectra S1 Plus | 320 mmHg | 15mm, 17mm, 21mm, 24mm, 28mm | 3.3 lbs | 3 hours | 40 dB | Check Price |
| Medela Freestyle | 250 mmHg | 15mm, 17mm, 21mm, 24mm | 0.5 lbs | 4-8 sessions | 40 dB | Check Price |
| Elvie Stride Plus | 280 mmHg | 15mm, 17mm, 21mm, 24mm | 0.5 lbs | 3 hours | 40 dB | Check Price |
| Momcozy M5 | 270 mmHg | 17mm, 19mm, 21mm, 24mm | 0.5 lbs | 4-8 sessions | 42 dB | Check Price |
| Lansinoh Discreet Duo | 300 mmHg | 15mm, 17mm, 21mm, 24mm | 0.6 lbs | 2 hours | 42 dB | Check Price |
Real-World Testing Scenarios
Our lactating moms found the suction power too strong during the letdown phase, which can be uncomfortable for sensitive breasts or nipples. Alternatively, the Spectra S1 Plus has adjustable suction levels for comfort needs. In testing, we noticed that the suction improves when the motor is plugged in, rather than battery-powered, and the motor was a little too loud to use discreetly on a work call. The Elvie Stride has gained attention for its standout feature of being a wearable design that fits inside your bra. It also wasn’t as efficient in our tests, showing an average of 0.12 ounces of milk per minute. The Baby Buddha expressed 0.45 oz/min on average.
One mom tested the Medela Freestyle while multitasking at home: “I’m a mom of two and usually need to be hands free while pumping,” she said. “This pump works well (strong suction, adequate output) however it isn’t as portable as I’d like it to be since you have to carry both the pump and the battery pack around with you.” For the Momcozy M5, a tester noted, “I used this in between surgeries and while in my clinic. It was just what I needed to keep my day moving smoothly and comfortably. It was effective, fairly quiet and extremely comfortable.”
Buying Guide for Breast Pumps
Selecting the right electric breast pump involves considering your specific needs and lifestyle. Here’s a guide to help you make the best choice:
- Suction Power and Settings: Begin by evaluating the suction power, as this is crucial for effective milk expression. Look for pumps with adjustable suction settings to customize your experience for comfort and efficiency.
- Type of Pumping: Exclusive Pumping: Choose a pump with strong suction and efficient milk expression capabilities. Occasional Use: A more portable and lightweight model may suffice.
- Comfort: Ensure the pump offers various flange sizes to fit comfortably and promote effective milk flow.
- Portability: If you travel frequently or need to pump at work, consider wearable breast pumps with a compact design and a rechargeable battery.
- Noise Level: The noise level is important, especially for working moms who may need a quieter, more discreet pump suitable for public or shared environments.
Additional Considerations
- Insurance Coverage: Many insurance plans cover breast pumps. Check with providers like Aeroflow Breastpumps to see if you qualify for a free or discounted pump.
- Cleaning and Maintenance: Cleaning is important because bacteria can grow on breast pump parts and sicken your baby. The CDC recommends that breast pump parts that come into contact with breast milk be fully washed either in a dishwasher or in a tub with warm, soapy water after each use, and allowed to air-dry.
- Accessories: Some accessories aren’t necessities, but they can make your life easier – like a bottle drying rack, or a nursing cover that can help you pump in public without feeling self-conscious.
Frequently Asked Questions
Can an electric breast pump mimic a baby’s suction?
Yes, Momcozy electric breast pumps are designed to mimic a baby’s natural sucking patterns. They often feature adjustable settings that allow users to find a rhythm and strength that closely resembles the feel of a baby nursing, which can be more comfortable for the mother and effective in stimulating milk flow.
Is a pumping bra necessary?
No, it is not strictly necessary to use pumping bras when using a breast pump, but they can significantly enhance your pumping experience. Pumping bras are designed to provide optimal support and positioning for the pump, allowing for hands-free pumping.
How often should I replace pump parts?
Check your own pump’s instruction manual, though, because cleaning directions vary by manufacturer. Consider sanitizing once a day, especially if the baby is younger than 2 months old, was premature, or is immunocompromised. Replace flanges and valves every 2-3 months or if they show signs of wear.
Are wearable pumps less efficient?
Wearable pumps often tend to be less efficient than a traditional pump. They may not offer the same level of suction or milk output as larger, traditional pumps. A high-efficiency electric pump with adjustable settings and high suction power is the best choice for exclusive pumpers.
Final Thoughts
Finding the best breast pump for small breasts comes down to prioritizing flange fit, comfort, and your lifestyle needs. The Spectra S1 Plus stands out for its hospital-grade power and versatility, while the Medela Freestyle and Elvie Stride Plus offer hands-free convenience for busy moms. For budget-conscious buyers, the Momcozy M5 and Lansinoh Discreet Duo deliver impressive performance at a lower cost. By measuring your nipple size, testing different pumps, and considering factors like portability and noise, you can find a pump that supports your breastfeeding goals with ease. For more breastfeeding resources, visit La Leche League or consult a lactation consultant.