Review on Premium 32 Ounce Airtight Kombucha Bottles & Funnel Set - High-Quality Glass Bottles with Efficient PolyCone Insert Sealing Caps - Ideal for Carbonating & Flavoring Kombucha during Secondary Fermentation by Candice Davis

The bottles are large, feel good in the hand and look great. I used to use screw cap bottles like this before, but I usually use screw caps because they are cheaper. While they look great and are reasonably priced, you get what you pay for. Of the four bottles that I received, only one was gas-tight and suitable for post-fermentation of kombucha. Two of them weren't airtight, and one of them actually broke the cap when I put it on. I didn't feel a lot of pressure. I don't know if I got a bad batch, but it was definitely wasted money (and kombucha!).