To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
I was impressed with the quality of these pump parts for my Spectra S2 despite being skeptical reading other reviews that said the quality was lacking. It came well packaged and with extremely clear instructions on how to assemble, clean and maintain the parts. I've been using these parts for over a month and have no noticed any change in quality.
These things have saved my life and my two sisters... Even though I have stopped breastfeeding, I'm still using the bottles as they are a bit bigger than the Philips ones. Easy to be hold by the baby too.