The Best Breast Pump: The Motif Luna Vs Spectra S2Plus

If you’ve narrowed your breast pump options to the Motif Luna and Spectra S2Plus then you’ve already rooted out two incredible options for your breast pumping journey. However, how do you choose between them? Well, look at the difference between each pump to see which features will best fit your needs. 

The Motif Luna Vs The Spectra S2Plus 

Breast Pumping Strenght 

If you need to breast pump in a jiffy or have trouble expressing breast milk then suction strength matters. It provides the ability to pump faster and can help you extract more milk if you’ve been struggling to produce.

  • The Spectra S2 Plus sports a motor strength of 270 mmHg. 
  • The Motif Luna’s motor strength isn’t listed but they boast the bold claim of being able to pump more milk in less time by being more comfortable at the highest setting for a faster let-down. Motif suggests pumping between 40 mmHg and 280 mmHg, but our Kelly Boob Book detectives were unable to determine if 280 mmHg is the highest setting or not. 

Note: If you need a hospital-grade breast pump your doctor will let you know. They are stronger than the average breast pump and are often rentable through insurance. Hospital-grade pumps often provide over 300 mmHg in strength but are designed for multiple users instead of total suction strength. Personal double electric breast pumps are designed for a single user and provide enough strength for a majority of moms to successfully breast pump. 

Motif Luna Breast Pump

The Motif Luna

Breast Pump Weight 

Chances are that if you are getting a breast pump that you may need to carry it places with you from time to time in order to maintain your pumping schedule. Considering how portable each pump is can make a difference while breast pumping on the go. For example, you don’t want to lug around a big bulky machine when a lightweight, compact option is available. 

  • The Luna weighs in at 2 pounds. 
  • The Spectra weighs in at 4 pounds. 

This might make the spectra the heavyweight champion, but in reality, do two pounds make all the difference? While the Spectra has a handle to make carrying a bit easier, the Luna has a more compact shape, making it easier to toss into a bag and go. 

Breast Pump Comfort 

You are going to spend a lot of time with your boobs in breast shields depending on how often you pump, making comfort a priority. 

  • The Luna puts you in control with massage and expression modes that are completely customizable to your personal preferences. The modes also stimulate a natural let down cycle that mimick your baby’s natural suckling pattern. 
  • The Spectra has 2 phase cycling with customizable suction and strength settings for extreme comfort during each pumping session. The letdown setting also mimics baby’s natural nursing rhythm. 

2 phase cycling refers to two phases of a baby’s suckling pattern. A rapid phase for the letdown cycle to initiate milk flow, and longer deeper pulls once the milk has started flowing to act like a baby swallowing milk. 

Spectra S2Plus Breast Pump

Spectra S2Plus

Breast Pump Power 

Every mom needs to know if their breast pump is battery powered or not. This is crucial for determining if they need to find a plug to pump on the go or not. The Spectra S2 has a built-in rechargeable battery, but the Luna does not. They come with AC adaptors that need to be plugged into the wall for power. 

Breast Pump Discreetness 

Some moms prefer to discreetly breast pump without their coworkers, friends, or strangers knowing. For discrete pumping to be possible you need a quiet pump. A quiet pump also prevents your baby from waking up during pumping times. 

  • The Luna has a motor with a 45-decibel hum, which falls into the 30-45 decibel range for quiet library conversation. 
  • The Spectra S2 operates at 45 decibels. 

Why Breast Pump is Best?

While the Spectra S2Plus and Motif Luna are both excellent posts in terms of comfort, portability, strength, and more, which one is better depends on your personal needs. Choose the pump that will best suit your lifestyle for a successful breast pumping journey.


  1. RK June 3, 2020 at 5:37 am - Reply

    The S2 does NOT have a rechargeable battery, it runs on the AC power cord only. The S1 (available through many insurance sites as an affordable upgrade option) has a rechargeable battery option.

  2. Megan July 9, 2020 at 1:43 pm - Reply

    Agree with other commenter – you’re giving false information by saying the s2 has a rechargeable battery, it does not.

  3. Pat July 20, 2020 at 6:42 pm - Reply

    Thanks for sharing such a helpful post. The S2 and Luna breast pumps are both fantastic choices. If any new moms are looking to get a free breast pump with insurance, they can do that here –

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