Bests & Worsts Reviews from Amazon

I'm repeating what other people have said, but it needs to be done to even out these unnecessarily bad reviews! Everyone that has given this item one star and says it doesn't fit and it leaks did not read the instructions, which were extremely minimal. This SNAPS into the metal ring before you screw the ring onto the jar. This is an additional pro, because then you're not dealing with two different pieces when taking the lid on and off, which you would for a standard ball jar lid, or with some other mason jar accessories I have tried. I bought just one of these to try, and I am extremely pleased with it. Before I wrote this, I filled a jar with water with the top on, and shook it over my sink to make sure I was going to give an accurate review. It did not leak. The top did not unhinge. I can fit a regular-sized straw through the drink hole (which is slightly bigger than the hole in a to-go coffee cup lid), and I also poured the liquid out of the drink hole, and it did not dribble all down the side. I did not expect it to not dribble; that was an added bonus. I will definitely be buying more of these.