Maymom Pump Parts Compatible with Spectra S2 S1 Replacement Kit for Spectra Pump Parts 21mm Flange Duckbill Valve Tube Bottle Backflow Protector, Not Original S2 Accessories

I have three sets of pump parts for my S1: the original Spectra parts, Maymom parts, and these Momstouch parts. There is no discernible difference in those three sets in any part other than the bottle. At this point, all of them have been mixed together and I don’t think I could tell them apart if I tried. All of them are compatible with all of the other parts, as well as with the glass Philips AVENT bottles. That said, I like these bottles least because they hold just over 4oz and I have an oversupply, often pumping 4-6oz per breast. I can only use these bottles if I already feel a little “emptied.”

I love that the flanges are true to size, and a little bit wider towards the valve, which I feel helped milk to flow better and faster through the flange. The quality of this was great, I really like that the plastic pieces felt more sturdy than the accessories that my spectra came with by default.Many reviews complain about the backflow protector piece snapping off but I didn't have any issues. If you are gentle, it's easy to get off without breaking and is actually quite sturdy. They send instructions with a specific warning about the wrong way to pull it off, anyone complaining about the quality and it breaking is probably being too aggressive and/or not pulling it off correctly.I used these with the blue spectra and every part of them was compatible. I really didn't notice a difference between spectra parts and these except for the increase in quality and thickness. I also love that they sell the individual flanges if you ever need another size but don't want to buy the whole set.Piece of Advice: order slightly larger than you need, then buy cushions/inserts to make the flange more comfortable. No fault of this company, but plastic isn't really comfortable any way you try to do it.

Love using these for my spectra. I like that you don’t have to buy flange inserts and having an extra set saves me from washing them 6x per day

I definitely recommend getting this if you only have one set. Especially if you are washing and don’t have a fancy machine that washes these pumps for you.

Works great with Spectra pump. I used these parts regularly for 3 months without any issues.

Good alternative to spectra pump parts however seems like there are extra pieces to clean.

Great price and quality. Fits Medea pump. Smaller flange worked better for me than what typical comes with medela pumps.I used it as a second set so I didn’t have to stress to have pump parts always clean. Helped with the stress of pumping and was affordable.

I was skeptical at first but they fit perfectly, suction is just as strong, and they’re way more affordable than the Spectra originals. Super easy to clean too. Highly recommend if you’re looking to replace your pump parts without spending a fortune!