Grolsch Flip-top Bottle (750 ml)
Product Review (submitted on February 26, 2014):
When I told my husband I wanted this type bottle for kefir water, he found one at a thrift store for me. After ordering a couple more on-line and telling him how much they cost, he was shocked! He paid twice that for a clear, used one! Other than the hinges being tight (which I imagine changes with use), these are excellent bottles at a great price.