Grolsch Flip-top Bottle (750 ml)
Product Review (submitted on November 21, 2013):
I ordered two of these bottles and wish I'd ordered 6! I'm using them to make kefir water soda. After trying them out, I found other bottles at a local store, but they don't have as tight a seal. The only thing about these bottles that I don't like is that it is very difficult to lift the metal clip. I have to use a piece of rubber cupboard liner to do it. But this is a sign of obvious quality as well.