12PCS Duckbill Valves Silicone Diaphragm Compatible with eufy S1 Pro S1 E10, Lansinoh Discreet Duo, NCVI NICEGREEN Nuliie Zooawa S32 Breast Pump Parts S32 Pump Replacement, for Lansinoh Pump Parts

These fit my breast pump perfectly and the material seems to be good quality!

These work amazing and affordable!!

This 10/10 saved my life. I could finally pump without pain

Did exactly what they were supposed to do for my wife. Especially this variety pack is REALLY what you need. Many kits when you get your pump through insurance will already include one set of inserts. But apparently the nipple can change size throughout the breastfeeding period. Some of this is from the mammary glands expressing better, but there may also be inflammation, especially earlier on. So the size of the nipple changes, and we're talking a tolerance of literally millimeters. Being able to swap up 2mm was VERY comforting for my wife. Would strongly recommend.

A cheaper alternative than buying the name brand from the breast pump manufacturer website. Unfortunately, all but 2 of the duck bills had gap openings meaning the suction won’t be as strong or effective. It’s great to get the item fast, but the quality of the items are subpar considering over half of them didn’t provide proper suction.

These are so nice for when you don’t want to buy the flanges. All breast pumps come with either a 24 or 22 flanges so these inserts are less expensive and easier to store instead of buying another flange size that fits you.

fit in every pump i used during our journey, wall and portables.

Leaked for me. They fit in well enough, but milk would leak around the top.