Product: Maymom Pump Parts Compatible with Spectra S2 Spectra S1 Spectra 9 Plus Breastpump, Flange (19mm)Valve Tubing Backflow Protector, Not Original Spectra Pump Parts Not Original Spectra S2 Accessories
Brand: Maymom
This product is made by Maymom to fit spectra's S1/S2 pumps in addition to spectra 9 and spectra M pumps. It is known that using the correct size of flange (breastshield) in breastmilk pumping is the most important factor in achieving comfort and efficiency. Every mother was created differently. One or two sizes can't fit all. That is why Maymom develops more than 12 sizes of flanges spanning from 13 mm up to 36 mm to fit the average mothers and those mothers who need special sizes (e.g. 13, 15, 17, 36 mm). For pumping comfort, measure your nipple diameter first (do it after a pumping session), and then use the size selector of this listing to choose the size that is 1-2 mm larger than your nipple diameter, which is measured AFTER a pumping session.  There are improvements of Maymom flange over the original spectra design -
 1. In addition to Spectra's duckbills, you can use Maymom duckbills or Maymom valve/membrane system with Maymom flange. 
 2. In addition to fitting Spectra's backflow protector, you can use Maymom long stem, as well as short stem backflow protectors. You can also use Maymom tubing connector (sold separately e.g. ASIN B0033B9CZ2) to connect Maymom flange to many other popular breastpumps on the market.  Content of the kit: 
 Wide Mouth Flange x2 
 Tubing x2 
 Backflow protector x2 
 Duckbill valves x2 
NOTE: bottles are not included in this listing. 
  About Maymom
 Maymom is specialized in developing breast pump parts that can work with many name brand pumps on the market. The value of Maymom is to care for each mom!  Disclaimer: 
 Maymom is an independent company. Spectra is a trademark of Uzinmedicare, Korea. Maymom is not affiliated with Uzinmedicare.
"Maymom aftermarket PUMP PARTS FOR SPECTRA S2 SPECTRA S1 SPECTRA 9 PLUS BREASTPUMPS. Made by Maymom. Not Original Spectra Parts. Incl 2 Flanges (19mm), 2 Valves, 2 Backflow Protectors and 2 Tubings. The flanges can only connect to WIDE MOUTH bottles.
"AFTERMARKET PARTS MADE BY Maymom. INTERCHANGEABLE WITH SPECTRA PARTS. All parts are interchangeable with Spectra Pump Parts. Can be used with Spectra flange, Spectra backflow protector, Spectra valve, and Spectra tubing.
"USED WITH WIDE-MOUTH BOTTLES ONLY. Use this kit with Spectra bottles, Avent bottles, and Maymom wide mouth bottles. DOES NOT work with OTHER WIDE NECK BOTTLES. CLOSED SYSTEM. No contact between milk and tubing.
"DIFFERENT FLANGE SIZE AVAILABLE: 19mm, 21mm, 24mm, 25mm, 27mm, 28mm, 30mm, 32mm. Refer to size selection guide in product photo to choose the right size for you.
"IN RETAIL PACK. All parts can be sterilized with water steam or boiling water. Do not contain any BPA. Tested by independent labs for safety.

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