Review on Transform Your Mason Jar into a Pitcher: 2 Pack Wide Mouth Lids with Handle, Airtight Seal & Easy Pouring by Paul Letho

I was so excited to use these for mixing and making my baby's BM/feeding bottles but was very disappointed to discover straight away that they weren't airtight! Each time I shook the jar to mix it, the liquid slowly leaked out from under the liner. I have tried everything to reinstall the gasket and get a tight seal but to no avail. I was ready to deal with it as the leak was minor and it was a mix and not precious BM at the time, but then I accidentally dropped it once and the flip top broke in half. OVER HIM! One positive point, I was within 30 days and was able to return the seller for a refund.