Okay, so I was STRUGGLING with my Momcozy S9 Pro flanges leaving angry red lines after just 8 minutes - ouch city! Took a chance on these IVARONAL duckbills and WOW what a difference!

The fit is actually BETTER than the original parts (shh don't tell Momcozy). No leaks, way more comfortable, and super easy to pop on. My pumping sessions went from 'omg when will this end' to 'oh this isn't so bad'.

Major bonus? Only two pieces to clean instead of four! As a sleep-deprived mom, this is life-changing math. The food-grade silicone feels soft and safe - no weird smells or harsh materials.

Pro tip: Don't use brushes when cleaning! Just warm soapy water and your fingers keeps them in perfect shape. They've held up great through multiple sterilizations too.

Only tiny gripe? The milk pour-out could be slightly better designed, but honestly it's such a minor thing compared to the comfort upgrade. 10/10 would recommend to any pumping mama!